-
-### Financial Contributors
-
-
-
-## :newspaper: RSS Feed & Updates
-
-GitHub exposes an [RSS/Atom](https://git.hhf.technology/hhf/the-book-of-secret-knowledge/commits.atom) feed of the commits, which may also be useful if you want to be kept informed about all changes.
-
-## :ballot_box_with_check: ToDo
-
-- [ ] Add new stuff...
-- [ ] Add useful shell functions
-- [ ] Add one-liners for collection tools (eg. CLI Tools)
-- [ ] Sort order in lists
-
-New items are also added on a regular basis.
-
-## :anger: Table of Contents
-
-Only main chapters:
-
-- **[CLI Tools](#cli-tools-toc)**
-- **[GUI Tools](#gui-tools-toc)**
-- **[Web Tools](#web-tools-toc)**
-- **[Systems/Services](#systemsservices-toc)**
-- **[Networks](#networks-toc)**
-- **[Containers/Orchestration](#containersorchestration-toc)**
-- **[Manuals/Howtos/Tutorials](#manualshowtostutorials-toc)**
-- **[Inspiring Lists](#inspiring-lists-toc)**
-- **[Blogs/Podcasts/Videos](#blogspodcastsvideos-toc)**
-- **[Hacking/Penetration Testing](#hackingpenetration-testing-toc)**
-- **[Your daily knowledge and news](#your-daily-knowledge-and-news-toc)**
-- **[Other Cheat Sheets](#other-cheat-sheets-toc)**
-- **[Shell One-liners](#shell-one-liners-toc)**
-- **[Shell Tricks](#shell-tricks-toc)**
-- **[Shell Functions](#shell-functions-toc)**
-
-## :trident: The Book of Secret Knowledge (Chapters)
-
-#### CLI Tools [[TOC]](#anger-table-of-contents)
-
-##### :black_small_square: Shells
-
-
- GNU Bash - is an sh-compatible shell that incorporates useful features from the Korn shell and C shell.
- Zsh - is a shell designed for interactive use, although it is also a powerful scripting language.
- tclsh - is a very powerful cross-platform shell, suitable for a huge range of uses.
- bash-it - is a framework for using, developing and maintaining shell scripts and custom commands.
- Oh My ZSH! - is the best framework for managing your Zsh configuration.
- Oh My Fish - the Fishshell framework.
- Starship - the cross-shell prompt written in Rust.
- powerlevel10k - is a fast reimplementation of Powerlevel9k ZSH theme.
-
- z - tracks the folder you use the most and allow you to jump, without having to type the whole path.
- fzf - is a general-purpose command-line fuzzy finder.
- zsh-autosuggestions - Fish-like autosuggestions for Zsh.
- zsh-syntax-highlighting - Fish shell like syntax highlighting for Zsh.
- Awesome ZSH Plugins - A list of frameworks, plugins, themes and tutorials for ZSH.
-
- Midnight Commander - is a visual file manager, licensed under GNU General Public License.
- ranger - is a VIM-inspired filemanager for the console.
- nnn - is a tiny, lightning fast, feature-packed file manager.
- screen - is a full-screen window manager that multiplexes a physical terminal.
- tmux - is a terminal multiplexer, lets you switch easily between several programs in one terminal.
- tmux-cssh - is a tool to set comfortable and easy to use functionality tmux-sessions.
-
- vi - is one of the most common text editors on Unix.
- vim - is a highly configurable text editor.
- emacs - is an extensible, customizable, free/libre text editor, and more.
- micro - is a modern and intuitive terminal-based text editor.
- neovim - is a free open source, powerful, extensible and usable code editor.
- spacemacs - a community-driven Emacs distribution.
- spacevim - a community-driven vim distribution.
-
- fd - is a simple, fast and user-friendly alternative to find.
- ncdu - is an easy to use, fast disk usage analyzer.
-
- PuTTY - is an SSH and telnet client, developed originally by Simon Tatham.
- Mosh - is a SSH wrapper designed to keep a SSH session alive over a volatile connection.
- Eternal Terminal - enables mouse-scrolling and tmux commands inside the SSH session.
- nmap - is a free and open source (license) utility for network discovery and security auditing.
- zmap - is a fast single packet network scanner designed for Internet-wide network surveys.
- Rust Scan - to find all open ports faster than Nmap.
- masscan - is the fastest Internet port scanner, spews SYN packets asynchronously.
- pbscan - is a faster and more efficient stateless SYN scanner and banner grabber.
- hping - is a command-line oriented TCP/IP packet assembler/analyzer.
- mtr - is a tool that combines the functionality of the 'traceroute' and 'ping' programs in a single tool.
- mylg - utility which combines the functions of the different network probes in one diagnostic tool.
- netcat - utility which reads and writes data across network connections, using the TCP/IP protocol.
- socat - utility which transfers data between two objects.
- tcpdump - is a powerful command-line packet analyzer.
- tshark - is a tool that allows us to dump and analyze network traffic (wireshark cli).
- Termshark - is a simple terminal user-interface for tshark.
- ngrep - is like GNU grep applied to the network layer.
- netsniff-ng - is a Swiss army knife for your daily Linux network plumbing if you will.
- sockdump - dump unix domain socket traffic.
- stenographer - is a packet capture solution which aims to quickly spool all packets to disk.
- tcpterm - visualize packets in TUI.
- bmon - is a monitoring and debugging tool to capture networking related statistics and prepare them visually.
- iptraf-ng - is a console-based network monitoring program for Linux that displays information about IP traffic.
- vnstat - is a network traffic monitor for Linux and BSD.
- iPerf3 - is a tool for active measurements of the maximum achievable bandwidth on IP networks.
- ethr - is a Network Performance Measurement Tool for TCP, UDP & HTTP.
- Etherate - is a Linux CLI based Ethernet and MPLS traffic testing tool.
- echoip - is a IP address lookup service.
- Nemesis - packet manipulation CLI tool; craft and inject packets of several protocols.
- packetfu - a mid-level packet manipulation library for Ruby.
- Scapy - packet manipulation library; forge, send, decode, capture packets of a wide number of protocols.
- impacket - is a collection of Python classes for working with network protocols.
- ssh-audit - is a tool for SSH server auditing.
- aria2 - is a lightweight multi-protocol & multi-source command-line download utility.
- iptables-tracer - observe the path of packets through the iptables chains.
- inception - a highly configurable tool to check for whatever you like against any number of hosts.
- mRemoteNG - a fork of mRemote, multi-tabbed PuTTy on steroids!
-
- dnsdiag - is a DNS diagnostics and performance measurement tools.
- fierce - is a DNS reconnaissance tool for locating non-contiguous IP space.
- subfinder - is a subdomain discovery tool that discovers valid subdomains for websites.
- sublist3r - is a fast subdomains enumeration tool for penetration testers.
- amass - is tool that obtains subdomain names by scraping data sources, crawling web archives, and more.
- namebench - provides personalized DNS server recommendations based on your browsing history.
- massdns - is a high-performance DNS stub resolver for bulk lookups and reconnaissance.
- knock - is a tool to enumerate subdomains on a target domain through a wordlist.
- dnsperf - DNS performance testing tools.
- dnscrypt-proxy 2 - a flexible DNS proxy, with support for encrypted DNS protocols.
- dnsdbq - API client providing access to passive DNS database systems.
- grimd - fast dns proxy, built to black-hole internet advertisements and malware servers.
- dnstwist - detect typosquatters, phishing attacks, fraud, and brand impersonation.
-
- curl - is a command line tool and library for transferring data with URLs.
- kurly - is an alternative to the widely popular curl program, written in Golang.
- HTTPie - is an user-friendly HTTP client.
- wuzz - is an interactive cli tool for HTTP inspection.
- h2spec - is a conformance testing tool for HTTP/2 implementation.
- h2t - is a simple tool to help sysadmins to hardening their websites.
- htrace.sh - is a simple Swiss Army knife for http/https troubleshooting and profiling.
- httpstat - is a tool that visualizes curl statistics in a way of beauty and clarity.
- httplab - is an interactive web server.
- Lynx - is a text browser for the World Wide Web.
- Browsh - is a fully interactive, real-time, and modern text-based browser.
- HeadlessBrowsers - a list of (almost) all headless web browsers in existence.
- ab - is a single-threaded command line tool for measuring the performance of HTTP web servers.
- siege - is an http load testing and benchmarking utility.
- wrk - is a modern HTTP benchmarking tool capable of generating significant load.
- wrk2 - is a constant throughput, correct latency recording variant of wrk.
- vegeta - is a constant throughput, correct latency recording variant of wrk.
- bombardier - is a fast cross-platform HTTP benchmarking tool written in Go.
- gobench - http/https load testing and benchmarking tool.
- hey - HTTP load generator, ApacheBench (ab) replacement, formerly known as rakyll/boom.
- boom - is a script you can use to quickly smoke-test your web app deployment.
- SlowHTTPTest - is a tool that simulates some Application Layer Denial of Service attacks by prolonging HTTP.
- gobuster - is a free and open source directory/file & DNS busting tool written in Go.
- ssllabs-scan - command-line reference-implementation client for SSL Labs APIs.
- http-observatory - Mozilla HTTP Observatory cli version.
- Hurl - is a command line tool to run and test HTTP requests with plain text.
-
- openssl - is a robust, commercial-grade, and full-featured toolkit for the TLS and SSL protocols.
- gnutls-cli - client program to set up a TLS connection to some other computer.
- sslyze
- - fast and powerful SSL/TLS server scanning library.
- sslscan - tests SSL/TLS enabled services to discover supported cipher suites.
- testssl.sh - testing TLS/SSL encryption anywhere on any port.
- cipherscan - a very simple way to find out which SSL ciphersuites are supported by a target.
- spiped - is a utility for creating symmetrically encrypted and authenticated pipes between socket addresses.
- Certbot - is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server.
- mkcert - simple zero-config tool to make locally trusted development certificates with any names you'd like.
- certstrap - tools to bootstrap CAs, certificate requests, and signed certificates.
- Sublert - is a security and reconnaissance tool to automatically monitor new subdomains.
- mkchain - open source tool to help you build a valid SSL certificate chain.
- ssl-cert-check - SSL Certification Expiration Checker.
-
- SELinux - provides a flexible Mandatory Access Control (MAC) system built into the Linux kernel.
- AppArmor - proactively protects the operating system and applications from external or internal threats.
- grapheneX - Automated System Hardening Framework.
- DevSec Hardening Framework - Security + DevOps: Automatic Server Hardening.
-
- ossec - actively monitoring all aspects of system activity with file integrity monitoring.
- auditd - provides a way to track security-relevant information on your system.
- Tiger - is a security tool that can be use both as a security audit and intrusion detection system.
- Lynis - battle-tested security tool for systems running Linux, macOS, or Unix-based operating system.
- LinEnum - scripted Local Linux Enumeration & Privilege Escalation Checks.
- Rkhunter - scanner tool for Linux systems that scans backdoors, rootkits and local exploits on your systems.
- PE-sieve - is a light-weight tool that helps to detect malware running on the system.
- PEASS - privilege escalation tools for Windows and Linux/Unix and MacOS.
-
- strace - diagnostic, debugging and instructional userspace utility for Linux.
- DTrace - is a performance analysis and troubleshooting tool.
- ltrace - is a library call tracer, used to trace calls made by programs to library functions.
- ptrace-burrito - is a friendly wrapper around ptrace.
- perf-tools - performance analysis tools based on Linux perf_events (aka perf) and ftrace.
- bpftrace - high-level tracing language for Linux eBPF.
- sysdig - system exploration and troubleshooting tool with first class support for containers.
- Valgrind - is an instrumentation framework for building dynamic analysis tools.
- gperftools - high-performance multi-threaded malloc() implementation, plus some performance analysis tools.
- glances - cross-platform system monitoring tool written in Python.
- htop - interactive text-mode process viewer for Unix systems. It aims to be a better 'top'.
- bashtop - Linux resource monitor written in pure Bash.
- nmon - a single executable for performance monitoring and data analysis.
- atop - ASCII performance monitor. Includes statistics for CPU, memory, disk, swap, network, and processes.
- lsof - displays in its output information about files that are opened by processes.
- FlameGraph - stack trace visualizer.
- lsofgraph - convert Unix lsof output to a graph showing FIFO and UNIX interprocess communication.
- rr - is a lightweight tool for recording, replaying and debugging execution of applications.
- Performance Co-Pilot - a system performance analysis toolkit.
- hexyl - a command-line hex viewer.
- Austin - Python frame stack sampler for CPython.
-
- angle-grinder - slice and dice log files on the command line.
- lnav - log file navigator with search and automatic refresh.
- GoAccess - real-time web log analyzer and interactive viewer that runs in a terminal.
- ngxtop - real-time metrics for nginx server.
-
- usql - universal command-line interface for SQL databases.
- pgcli - postgres CLI with autocompletion and syntax highlighting.
- mycli - terminal client for MySQL with autocompletion and syntax highlighting.
- litecli - SQLite CLI with autocompletion and syntax highlighting.
- mssql-cli - SQL Server CLI with autocompletion and syntax highlighting.
- OSQuery - is a SQL powered operating system instrumentation, monitoring, and analytics framework.
- pgsync - sync data from one Postgres database to another.
- iredis - a terminal client for redis with autocompletion and syntax highlighting.
- SchemaCrawler - generates an E-R diagram of your database.
-
- Nipe - script to make Tor Network your default gateway.
- multitor - a tool that lets you create multiple TOR instances with a load-balancing.
-
- Irssi - is a free open source terminal based IRC client.
- WeeChat - is an extremely extensible and lightweight IRC client.
-
- taskwarrior - task management system, todo list
-
- sysadmin-util - tools for Linux/Unix sysadmins.
- incron - is an inode-based filesystem notification technology.
- lsyncd - synchronizes local directories with remote targets (Live Syncing Daemon).
- GRV - is a terminal based interface for viewing Git repositories.
- Tig - text-mode interface for Git.
- tldr - simplified and community-driven man pages.
- archiver - easily create and extract .zip, .tar, .tar.gz, .tar.bz2, .tar.xz, .tar.lz4, .tar.sz, and .rar.
- commander.js - minimal CLI creator in JavaScript.
- gron - make JSON greppable!
- bed - binary editor written in Go.
-
- Guake - is a dropdown terminal made for the GNOME desktop environment.
- Terminator - is based on GNOME Terminal, useful features for sysadmins and other users.
- Kitty - is a GPU based terminal emulator that supports smooth scrolling and images.
- Alacritty - is a fast, cross-platform, OpenGL terminal emulator.
-
- Wireshark - is the world’s foremost and widely-used network protocol analyzer.
- Ettercap - is a comprehensive network monitor tool.
- EtherApe - is a graphical network monitoring solution.
- Packet Sender - is a networking utility for packet generation and built-in UDP/TCP/SSL client and servers.
- Ostinato - is a packet crafter and traffic generator.
- JMeter™ - open source software to load test functional behavior and measure performance.
- locust - scalable user load testing tool written in Python.
-
- TOR Browser - protect your privacy and defend yourself against network surveillance and traffic analysis.
-
- KeePassXC - store your passwords safely and auto-type them into your everyday websites and apps.
- Bitwarden - open source password manager with built-in sync.
- Vaultwarden - unofficial Bitwarden compatible server written in Rust.
-
- HexChat - is an IRC client based on XChat.
- Pidgin - is an easy to use and free chat client used by millions.
-
- Signal - is an encrypted communications app.
- Wire - secure messaging, file sharing, voice calls and video conferences.
- TorChat - decentralized anonymous instant messenger on top of Tor Hidden Services.
- Matrix - an open network for secure, decentralized, real-time communication.
-
- Sublime Text - is a lightweight, cross-platform code editor known for its speed, ease of use.
- Visual Studio Code - an open-source and free source code editor developed by Microsoft.
- Atom - a hackable text editor for the 21st Century.
-
- SSL/TLS Capabilities of Your Browser - test your browser's SSL implementation.
- Can I use - provides up-to-date browser support tables for support of front-end web technologies.
- Panopticlick 3.0 - is your browser safe against tracking?
- Privacy Analyzer - see what data is exposed from your browser.
- Web Browser Security - it's all about Web Browser fingerprinting.
- How's My SSL? - help a web server developer learn what real world TLS clients were capable of.
- sslClientInfo - client test (incl TLSv1.3 information).
-
- SSLLabs Server Test - performs a deep analysis of the configuration of any SSL web server.
- SSLLabs Server Test (DEV) - performs a deep analysis of the configuration of any SSL web server.
- ImmuniWeb® SSLScan - test SSL/TLS (PCI DSS, HIPAA and NIST).
- SSL Check - scan your website for non-secure content.
- SSL Scanner - analyze website security.
- CryptCheck - test your TLS server configuration (e.g. ciphers).
- urlscan.io - service to scan and analyse websites.
- Report URI - monitoring security policies like CSP and HPKP.
- CSP Evaluator - allows developers and security experts to check if a Content Security Policy.
- Useless CSP - public list about CSP in some big players (might make them care a bit more).
- Why No HTTPS? - top 100 websites by Alexa rank not automatically redirecting insecure requests.
- TLS Cipher Suite Search- cipher suite search engine.
- cipherli.st - strong ciphers for Apache, Nginx, Lighttpd, and more.*
- dhtool - public Diffie-Hellman parameter service/tool.
- badssl.com - memorable site for testing clients against bad SSL configs.
- tlsfun.de - registered for various tests regarding the TLS/SSL protocol.
- CAA Record Helper - generate a CAA policy.
- Common CA Database - repository of information about CAs, and their root and intermediate certificates.
- CERTSTREAM - real-time certificate transparency log update stream.
- crt.sh - discovers certificates by continually monitoring all of the publicly known CT.
- Hardenize - deploy the security standards.
- Cipher suite compatibility - test TLS cipher suite compatibility.
- urlvoid - this service helps you detect potentially malicious websites.
- security.txt - a proposed standard (generator) which allows websites to define security policies.
- ssl-config-generator - help you follow the Mozilla Server Side TLS configuration guidelines.
- TLScan - pure python, SSL/TLS protocol and cipher scanner/enumerator.
-
- Security Headers - analyse the HTTP response headers (with rating system to the results).
- Observatory by Mozilla - set of tools to analyze your website.
- webhint - is a linting tool that will help you with your site's accessibility, speed, security, and more.
-
- ViewDNS - one source for free DNS related tools and information.
- DNSLookup - is an advanced DNS lookup tool.
- DNSlytics - online DNS investigation tool.
- DNS Spy - monitor, validate and verify your DNS configurations.
- Zonemaster - helps you to control how your DNS works.
- Leaf DNS - comprehensive DNS tester.
- Find subdomains online - find subdomains for security assessment penetration test.
- DNSdumpster - dns recon & research, find & lookup dns records.
- DNS Table online - search for DNS records by domain, IP, CIDR, ISP.
- intoDNS - DNS and mail server health checker.
- DNS Bajaj - check the delegation of your domain.
- BuddyDNS Delegation LAB - check, trace and visualize delegation of your domain.
- dnssec-debugger - DS or DNSKEY records validator.
- PTRarchive.com - this site is responsible for the safekeeping of historical reverse DNS records.
- xip.io - wildcard DNS for everyone.
- nip.io - dead simple wildcard DNS for any IP Address.
- dnslookup (ceipam) - one of the best DNS propagation checker (and not only).
- What's My DNS - DNS propagation checking tool.
- DNSGrep - quickly searching large DNS datasets.
-
- smtp-tls-checker - check an email domain for SMTP TLS support.
- MX Toolbox - all of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.
- Secure Email - complete email test tools for email technicians.
- blacklistalert - checks to see if your domain is on a Real Time Spam Blacklist.
- MultiRBL - complete IP check for sending Mailservers.
- DKIM SPF & Spam Assassin Validator - checks mail authentication and scores messages with Spam Assassin.
-
- URL Encode/Decode - tool from above to either encode or decode a string of text.
- Uncoder - the online translator for search queries on log data.
- Regex101 - online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript.
- RegExr - online tool to learn, build, & test Regular Expressions (RegEx / RegExp).
- RegEx Testing - online regex testing tool.
- RegEx Pal - online regex testing tool + other tools.
- The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis.
-
- Netcraft - detailed report about the site, helping you to make informed choices about their integrity.*
- RIPE NCC Atlas - a global, open, distributed Internet measurement platform.
- Robtex - uses various sources to gather public information about IP numbers, domain names, host names, etc.
- Security Trails - APIs for Security Companies, Researchers and Teams.
- Online Curl - curl test, analyze HTTP Response Headers.
- Online Tools for Developers - HTTP API tools, testers, encoders, converters, formatters, and other tools.
- Ping.eu - online Ping, Traceroute, DNS lookup, WHOIS and others.
- Network-Tools - network tools for webmasters, IT technicians & geeks.
- BGPview - search for any ASN, IP, Prefix or Resource name.
- Is BGP safe yet? - check BGP (RPKI) security of ISPs and other major Internet players.
- Riseup - provides online communication tools for people and groups working on liberatory social change.
- VirusTotal - analyze suspicious files and URLs to detect types of malware.
-
- privacyguides.org - provides knowledge and tools to protect your privacy against global mass surveillance.
- DNS Privacy Test Servers - DNS privacy recursive servers list (with a 'no logging' policy).
-
- ShellCheck - finds bugs in your shell scripts.
- explainshell - get interactive help texts for shell commands.
- jsbin - live pastebin for HTML, CSS & JavaScript, and more.
- CodeSandbox - online code editor for web application development.
- PHP Sandbox - test your PHP code with this code tester.
- Repl.it - an instant IDE to learn, build, collaborate, and host all in one place.
- vclFiddle - is an online tool for experimenting with the Varnish Cache VCL.
- Haskell Dockerfile Linter - a smarter Dockerfile linter that helps you build best practice Docker images.
-
- GTmetrix - analyze your site’s speed and make it faster.
- Sucuri loadtimetester - test here the
-performance of any of your sites from across the globe.
- Pingdom Tools - analyze your site’s speed around the world.
- PingMe.io - run website latency tests across multiple geographic regions.
- PageSpeed Insights - analyze your site’s speed and make it faster.
- web.dev - helps developers like you learn and apply the web's modern capabilities to your own sites and apps.
- Lighthouse - automated auditing, performance metrics, and best practices for the web.
-
- Censys - platform that helps information security practitioners discover, monitor, and analyze devices.
- Shodan - the world's first search engine for Internet-connected devices.
- Shodan 2000 - this tool looks for randomly generated data from Shodan.
- GreyNoise - mass scanner such as Shodan and Censys.
- ZoomEye - search engine for cyberspace that lets the user find specific network components.
- netograph - tools to monitor and understand deep structure of the web.
- FOFA - is a cyberspace search engine.
- onyphe - is a search engine for open-source and cyber threat intelligence data collected.
- IntelligenceX - is a search engine and data archive.
- binaryedge - it scan the entire internet space and create real-time threat intelligence streams and reports.
- Spyse - Internet assets registry: networks, threats, web objects, etc.
- wigle - is a submission-based catalog of wireless networks. All the networks. Found by Everyone.
- PublicWWW - find any alphanumeric snippet, signature or keyword in the web pages HTML, JS and CSS code.
- IntelTechniques - this repository contains hundreds of online search utilities.
- hunter - lets you find email addresses in seconds and connect with the people that matter for your business.
- GhostProject? - search by full email address or username.
- databreaches - was my email affected by data breach?
- We Leak Info - world's fastest and largest data breach search engine.
- Pulsedive - scans of malicious URLs, IPs, and domains, including port scans and web requests.
- Buckets by Grayhatwarfar - database with public search for Open Amazon S3 Buckets and their contents.
- Vigilante.pw - the breached database directory.
- builtwith - find out what websites are built with.
- NerdyData - search the web's source code for technologies, across millions of sites.
- zorexeye - search for sites, images, apps, softwares & more.
- Mamont's open FTP Index - if a target has an open FTP site with accessible content it will be listed here.
- OSINT Framework - focused on gathering information from free tools or resources.
- maltiverse - is a service oriented to cybersecurity analysts.
- Leaked Source - is a collaboration of data found online in the form of a lookup.
- We Leak Info - to help everyday individuals secure their online life, avoiding getting hacked.
- pipl - is the place to find the person behind the email address, social username or phone number.
- abuse.ch - is operated by a random swiss guy fighting malware for non-profit.
- malc0de - malware search engine.
- Cybercrime Tracker - monitors and tracks various malware families that are used to perpetrate cyber crimes.
- shhgit - find GitHub secrets in real time.
- searchcode - helping you find real world examples of functions, API's and libraries.
- Insecam - the world biggest directory of online surveillance security cameras.
- index-of - contains great stuff like: security, hacking, reverse engineering, cryptography, programming etc.
- Rapid7 Labs Open Data - is a great resources of datasets from Project Sonar.
- Common Response Headers - the largest database of HTTP response headers.
- InQuest Labs - InQuest Labs is an open, interactive, and API driven data portal for security researchers.
-
- thispersondoesnotexist - generate fake faces in one click - endless possibilities.
- AI Generated Photos - 100.000 AI generated faces.
- fakenamegenerator - your randomly generated identity.
- Intigriti Redirector - open redirect/SSRF payload generator.
-
- have i been pwned? - check if you have an account that has been compromised in a data breach.
- dehashed - is a hacked database search engine.
- Leaked Source - is a collaboration of data found online in the form of a lookup.
-
- CVE Mitre - list of publicly known cybersecurity vulnerabilities.
- CVE Details - CVE security vulnerability advanced database.
- Exploit DB - CVE compliant archive of public exploits and corresponding vulnerable software.
- 0day.today - exploits market provides you the possibility to buy/sell zero-day exploits.
- sploitus - the exploit and tools database.
- cxsecurity - free vulnerability database.
- Vulncode-DB - is a database for vulnerabilities and their corresponding source code if available.
- cveapi - free API for CVE data.
-
- ImmuniWeb® Mobile App Scanner - test security and privacy of mobile apps (iOS & Android).
- Quixxi - free Mobile App Vulnerability Scanner for Android & iOS.
- Ostorlab - analyzes mobile application to identify vulnerabilities and potential weaknesses.
-
- Startpage - the world's most private search engine.
- searX - a privacy-respecting, hackable metasearch engine.
- darksearch - the 1st real Dark Web search engine.
- Qwant - the search engine that respects your privacy.
- DuckDuckGo - the search engine that doesn't track you.
- Swisscows - privacy safe web search
- Disconnect - the search engine that anonymizes your searches.
- MetaGer - the search engine that uses anonymous proxy and hidden Tor branches.
-
- CounterMail - online email service, designed to provide maximum security and privacy.
- Mail2Tor - is a Tor Hidden Service that allows anyone to send and receive emails anonymously.
- Tutanota - is the world's most secure email service and amazingly easy to use.
- Protonmail - is the world's largest secure email service, developed by CERN and MIT scientists.
- Startmail - private & encrypted email made easy.
-
- Keybase - it's open source and powered by public-key cryptography.
-
- SKS OpenPGP Key server - services for the SKS keyservers used by OpenPGP.
-
- Slackware - the most "Unix-like" Linux distribution.
- OpenBSD - multi-platform 4.4BSD-based UNIX-like operating system.
- HardenedBSD - HardenedBSD aims to implement innovative exploit mitigation and security solutions.
- Kali Linux - Linux distribution used for Penetration Testing, Ethical Hacking and network security assessments.
- Parrot Security OS - cyber security GNU/Linux environment.
- Backbox Linux - penetration test and security assessment oriented Ubuntu-based Linux distribution.
- BlackArch - is an Arch Linux-based penetration testing distribution for penetration testers.
- Pentoo - is a security-focused livecd based on Gentoo.
- Security Onion - Linux distro for intrusion detection, enterprise security monitoring, and log management.
- Tails - is a live system that aims to preserve your privacy and anonymity.
- vedetta - OpenBSD router boilerplate.
- Qubes OS - is a security-oriented OS that uses Xen-based virtualization.
-
- Varnish Cache - HTTP accelerator designed for content-heavy dynamic web sites.
- Nginx - open source web and reverse proxy server that is similar to Apache, but very light weight.
- OpenResty - is a dynamic web platform based on NGINX and LuaJIT.
- Tengine - a distribution of Nginx with some advanced features.
- Caddy Server - is an open source, HTTP/2-enabled web server with HTTPS by default.
- HAProxy - the reliable, high performance TCP/HTTP load balancer.
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- Unbound - validating, recursive, and caching DNS resolver (with TLS).
- Knot Resolver - caching full resolver implementation, including both a resolver library and a daemon.
- PowerDNS - is an open source authoritative DNS server, written in C++ and licensed under the GPL.
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- 3proxy - tiny free proxy server.
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- Emerald Onion - is a 501(c)(3) nonprofit organization and transit internet service provider (ISP).
- pi-hole - the Pi-hole® is a DNS sinkhole that protects your devices from unwanted content.
- maltrail - malicious traffic detection system.
- security_monkey - monitors AWS, GCP, OpenStack, and GitHub orgs for assets and their changes over time.
- firecracker - secure and fast microVMs for serverless computing.
- streisand - sets up a new server running your choice of WireGuard, OpenSSH, OpenVPN, and more.
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- CapAnalysis - web visual tool to analyze large amounts of captured network traffic (PCAP analyzer).
- netbox - IP address management (IPAM) and data center infrastructure management (DCIM) tool.
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- NRE Labs - learn automation by doing it. Right now, right here, in your browser.
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- LBNL's Network Research Group - home page of the Network Research Group (NRG).
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- gvisor - container runtime sandbox.
- ctop - top-like interface for container metrics.
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- Moby - a collaborative project for the container ecosystem to assemble container-based system.
- Traefik - open source reverse proxy/load balancer provides easier integration with Docker and Let's encrypt.
- kong - The Cloud-Native API Gateway.
- rancher - complete container management platform.
- portainer - making Docker management easy.
- nginx-proxy - automated nginx proxy for Docker containers using docker-gen.
- bunkerized-nginx - nginx docker image "secure by default".
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- docker-bench-security - checks for dozens of common best-practices around deploying Docker.
- trivy - vulnerability scanner for containers, suitable for CI.
- Harbor - cloud native registry project that stores, signs, and scans content.
- Houdini - hundreds of offensive and useful docker images for network intrusion.
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- docker-cheat-sheet - a quick reference cheat sheet on Docker.
- awesome-docker - a curated list of Docker resources and projects.
- docker_practice - learn and understand Docker technologies, with real DevOps practice!
- labs
- - is a collection of tutorials for learning how to use Docker with various tools.
- dockerfiles - various Dockerfiles I use on the desktop and on servers.
- kubernetes-the-hard-way - bootstrap Kubernetes the hard way on Google Cloud Platform. No scripts.
- kubernetes-the-easy-way - bootstrap Kubernetes the easy way on Google Cloud Platform. No scripts.
- cheatsheet-kubernetes-A4 - Kubernetes CheatSheets in A4.
- k8s-security - kubernetes security notes and best practices.
- kubernetes-production-best-practices - checklists with best-practices for production-ready Kubernetes.
- kubernetes-production-best-practices - kubernetes security - best practice guide.
- kubernetes-failure-stories - is a compilation of public failure/horror stories related to Kubernetes.
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- pure-bash-bible - is a collection of pure bash alternatives to external processes.
- pure-sh-bible - is a collection of pure POSIX sh alternatives to external processes.
- bash-guide - is a guide to learn bash.
- bash-handbook - for those who wanna learn Bash.
- The Bash Hackers Wiki - hold documentation of any kind about GNU Bash.
- Shell & Utilities - describes the commands offered to application programs by POSIX-conformant systems.
- the-art-of-command-line - master the command line, in one page.
- Shell Style Guide - a shell style guide for Google-originated open-source projects.
-
- Vim Cheat Sheet - great multi language vim guide.
-
- Awesome Python - a curated list of awesome Python frameworks, libraries, software and resources.
- python-cheatsheet - comprehensive Python cheatsheet.
- pythoncheatsheet.org - basic reference for beginner and advanced developers.
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- F’Awk Yeah! - advanced sed and awk usage (Parsing for Pentesters 3).
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- nixCraft - linux and unix tutorials for new and seasoned sysadmin.
- TecMint - the ideal Linux blog for Sysadmins & Geeks.
- Omnisecu - free Networking, System Administration and Security tutorials.
- linux-cheat - Linux tutorials and cheatsheets. Minimal examples. Mostly user-land CLI utilities.
- linuxupskillchallenge - learn the skills required to sysadmin.
- Unix Toolbox - Unix/Linux/BSD commands and tasks which are useful for IT work or for advanced users.
- Linux Kernel Teaching - is a collection of lectures and labs Linux kernel topics.
- htop explained - explanation of everything you can see in htop/top on Linux.
- Linux Guide and Hints - tutorials on system administration in Fedora and CentOS.
- strace-little-book - a little book which introduces strace.
- linux-tracing-workshop - examples and hands-on labs for Linux tracing tools workshops.
- http2-explained - a detailed document explaining and documenting HTTP/2.
- http3-explained - a document describing the HTTP/3 and QUIC protocols.
- HTTP/2 in Action - an excellent introduction to the new HTTP/2 standard.
- Let's code a TCP/IP stack - great stuff to learn network and system programming at a deeper level.
- Nginx Admin's Handbook - how to improve NGINX performance, security and other important things.
- nginxconfig.io - NGINX config generator on steroids.
- openssh guideline - is to help operational teams with the configuration of OpenSSH server and client.
- SSH Handshake Explained - is a relatively brief description of the SSH handshake.
- ISC's Knowledgebase - you'll find some general information about BIND 9, ISC DHCP, and Kea DHCP.
- PacketLife.net - a place to record notes while studying for Cisco's CCNP certification.
-
- AD-Attack-Defense - attack and defend active directory using modern post exploitation activity.
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- The System Design Primer - learn how to design large-scale systems.
- Awesome Scalability - best practices in building High Scalability, High Availability, High Stability, and more.
- Web Architecture 101 - the basic architecture concepts.
-
- CIS Benchmarks - secure configuration settings for over 100 technologies, available as a free PDF.
- Security Harden CentOS 7 - this walks you through the steps required to security harden CentOS.
- CentOS 7 Server Hardening Guide - great guide for hardening CentOS; familiar with OpenSCAP.
- awesome-security-hardening - is a collection of security hardening guides, tools and other resources.
- The Practical Linux Hardening Guide - provides a high-level overview of hardening GNU/Linux systems.
- Linux Hardening Guide - how to harden Linux as much as possible for security and privacy.
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- Hacking Articles - LRaj Chandel's Security & Hacking Blog.
- AWS security tools - make your AWS cloud environment more secure.
- Rawsec's CyberSecurity Inventory - an inventory of tools and resources about CyberSecurity.
- The Illustrated TLS Connection - every byte of a TLS connection explained and reproduced.
- SSL Research - SSL and TLS Deployment Best Practices by SSL Labs.
- SELinux Game - learn SELinux by doing. Solve Puzzles, show skillz.
- Certificates and PKI - everything you should know about certificates and PKI but are too afraid to ask.
- The Art of Subdomain Enumeration - a reference for subdomain enumeration techniques.
- Quitting Google - the comprehensive guide to quitting Google.
-
- OWASP - worldwide not-for-profit charitable organization focused on improving the security of software.
- OWASP ASVS 3.0.1 - OWASP Application Security Verification Standard Project.
- OWASP ASVS 3.0.1 Web App - simple web app that helps developers understand the ASVS requirements.
- OWASP ASVS 4.0 - is a list of application security requirements or tests.
- OWASP Testing Guide v4 - includes a "best practice" penetration testing framework.
- OWASP Dev Guide - this is the development version of the OWASP Developer Guide.
- OWASP WSTG - is a comprehensive open source guide to testing the security of web apps.
- OWASP API Security Project - focuses specifically on the top ten vulnerabilities in API security.
- Mozilla Web Security - help operational teams with creating secure web applications.
- security-bulletins - security bulletins that relate to Netflix Open Source.
- API-Security-Checklist - security countermeasures when designing, testing, and releasing your API.
- Enable CORS - enable cross-origin resource sharing.
- Application Security Wiki - is an initiative to provide all application security related resources at one place.
- Weird Proxies - reverse proxy related attacks; it is a result of analysis of various proxies.
- Webshells - great series about malicious payloads.
- Practical Web Cache Poisoning - show you how to compromise websites by using esoteric web features.
- Hidden directories and files - as a source of sensitive information about web application.
- Explosive blog - great blog about cybersec and pentests.
- Security Cookies - this paper will take a close look at cookie security.
- APISecurityBestPractices - help you keep secrets (API keys, db credentials, certificates) out of source code.
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- LZone Cheat Sheets - all cheat sheets.
- Dan’s Cheat Sheets’s - massive cheat sheets documentation.
- Rico's cheatsheets - this is a modest collection of cheatsheets.
- DevDocs API - combines multiple API documentations in a fast, organized, and searchable interface.
- cheat.sh - the only cheat sheet you need.
- gnulinux.guru - collection of cheat sheets about bash, vim and networking.
- Web Skills - visual overview of useful skills to learn as a web developer.
-
- free-programming-books - list of free learning resources in many languages.
-
- CTF Series : Vulnerable Machines - the steps below could be followed to find vulnerabilities and exploits.
- 50M_CTF_Writeup - $50 million CTF from Hackerone - writeup.
- ctf-tasks - an archive of low-level CTF challenges developed over the years.
- How to start RE/malware analysis? - collection of some hints and useful links for the beginners.
- The C10K problem - it's time for web servers to handle ten thousand clients simultaneously, don't you think?
- How 1500 bytes became the MTU of the internet - great story about the Maximum Transmission Unit.
- poor man's profiler - like dtrace's don't really provide methods to see what programs are blocking on.
- HTTPS on Stack Overflow - this is the story of a long journey regarding the implementation of SSL.
- Julia's Drawings - some drawings about programming and unix world, zines about systems & debugging tools.
- Hash collisions - this great repository is focused on hash collisions exploitation.
- sha256-animation - animation of the SHA-256 hash function in your terminal.
- sha256algorithm - sha256 algorithm explained online step by step visually.
- BGP Meets Cat - after 3072 hours of manipulating BGP, Job Snijders has succeeded in drawing a Nyancat.
- bgp-battleships - playing battleships over BGP.
- What happens when... - you type google.com into your browser and press enter?
- how-web-works - based on the 'What happens when...' repository.
- HTTPS in the real world - great tutorial explain how HTTPS works in the real world.
- Gitlab and NFS bug - how we spent two weeks hunting an NFS bug in the Linux kernel.
- Gitlab melts down - postmortem on the database outage of January 31 2017 with the lessons we learned.
- How To Become A Hacker - if you want to be a hacker, keep reading.
- Operation Costs in CPU - should help to estimate costs of certain operations in CPU clocks.
- Let's Build a Simple Database - writing a sqlite clone from scratch in C.
- simple-computer - great resource to understand how computers work under the hood.
- The story of "Have I been pwned?" - working with 154 million records on Azure Table Storage.
- TOP500 Supercomputers - shows the 500 most powerful commercially available computer systems.
- How to build a 8 GPU password cracker - hours of frustration like desktop components do.
- CERN Data Centre - 3D visualizations of the CERN computing environments (and more).
- How fucked is my database - evaluate how fucked your database is with this handy website.
- Linux Troubleshooting 101 , 2016 Edition - everything is a DNS Problem...
- Five Whys - you know what the problem is, but you cannot solve it?
- Maersk, me & notPetya - how did ransomware successfully hijack hundreds of domain controllers?
- howhttps.works - how HTTPS works ...in a comic!
- howdns.works - a fun and colorful explanation of how DNS works.
- POSTGRESQLCO.NF - your postgresql.conf documentation and recommendations.
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- Awesome Sysadmin - amazingly awesome open source sysadmin resources.
- Awesome Shell - awesome command-line frameworks, toolkits, guides and gizmos.
- Command-line-text-processing - finding text to search and replace, sorting to beautifying, and more.
- Awesome Pcaptools - collection of tools developed by other researchers to process network traces.
- awesome-ebpf - a curated list of awesome projects related to eBPF.
- Linux Network Performance - where some of the network sysctl variables fit into the Linux/Kernel network flow.
- Awesome Postgres - list of awesome PostgreSQL software, libraries, tools and resources.
- quick-SQL-cheatsheet - a quick reminder of all SQL queries and examples on how to use them.
- Awesome-Selfhosted - list of Free Software network services and web applications which can be hosted locally.
- List of applications - huge list of apps sorted by category, as a reference for those looking for packages.
- CS-Interview-Knowledge-Map - build the best interview map.
- DevOps-Guide - DevOps Guide from basic to advanced with Interview Questions and Notes.
- FreeBSD Journal - it is a great list of periodical magazines about FreeBSD and other important things.
- devops-interview-questions - contains interview questions on various DevOps and SRE related topics.
- Web Developer Roadmap - roadmaps, articles and resources to help you choose your path, learn and improve.
- Front-End-Checklist - the perfect Front-End Checklist for modern websites and meticulous developers.
- Front-End-Performance-Checklist - Front-End Performance Checklist that runs faster than the others.
- Python's Magic Methods - what are magic methods? They're everything in object-oriented Python.
- wtfpython - a collection of surprising Python snippets and lesser-known features.
- js-dev-reads - a list of books and articles for the discerning web developer to read.
- Commit messages guide - a guide to understand the importance of commit messages.
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- Awesome Web Security - a curated list of Web Security materials and resources.
- awesome-cyber-skills - a curated list of hacking environments where you can train your cyber skills.
- awesome-devsecops - an authoritative list of awesome devsecops tools.
- awesome-osint - is a curated list of amazingly awesome OSINT.
- HolyTips - tips and tutorials on Bug Bounty Hunting and Web App Security.
- awesome-threat-intelligence - a curated list of Awesome Threat Intelligence resources.
- Red-Teaming-Toolkit - a collection of open source and commercial tools that aid in red team operations.
- awesome-burp-extensions - a curated list of amazingly awesome Burp Extensions.
- Free Security eBooks - list of a Free Security and Hacking eBooks.
- Hacking-Security-Ebooks - top 100 Hacking & Security E-Books.
- privacy-respecting - curated list of privacy respecting services and software.
- reverse-engineering - list of awesome reverse engineering resources.
- linux-re-101 - a collection of resources for linux reverse engineering.
- reverseengineering-reading-list - a list of Reverse Engineering articles, books, and papers.
- Awesome-WAF - a curated list of awesome web-app firewall (WAF) stuff.
- awesome-shodan-queries - interesting, funny, and depressing search queries to plug into shodan.io.
- RobotsDisallowed - a curated list of the most common and most interesting robots.txt disallowed directories.
- HackingNeuralNetworks - is a small course on exploiting and defending neural networks.
- wildcard-certificates - why you probably shouldn't use a wildcard certificate.
- Don't use VPN services - which is what every third-party "VPN provider" does.
- awesome-yara - a curated list of awesome YARA rules, tools, and people.
- macOS-Security-and-Privacy-Guide - guide to securing and improving privacy on macOS.
- macos_security - macOS Security Compliance Project.
- awesome-sec-talks - is a collected list of awesome security talks.
- Movies for Hackers - list of movies every hacker & cyberpunk must watch.
- Cryptography_1 - materials used whilst taking Prof. Dan Boneh Stanford Crypto course.
- Crypton - library to learn and practice Offensive and Defensive Cryptography.
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- Cheatography - over 3,000 free cheat sheets, revision aids and quick references.
- awesome-static-analysis - static analysis tools for all programming languages.
- computer-science - path to a free self-taught education in Computer Science.
- post-mortems - is a collection of postmortems (config errors, hardware failures, and more).
- build-your-own-x - build your own (insert technology here).
- Project-Based-Tutorials-in-C - is a curated list of project-based tutorials in C.
- The-Documentation-Compendium - various README templates & tips on writing high-quality documentation.
- awesome-python-applications - free software that works great, and also happens to be open-source Python.
- awesome-public-datasets - a topic-centric list of HQ open datasets.
- machine-learning-algorithms - a curated list of all machine learning algorithms and concepts.
-
- Varnish for PHP developers - very interesting presentation of Varnish by Mattias Geniar.
- A Netflix Guide to Microservices - talks about the chaotic and vibrant world of microservices at Netflix.
-
- Comparing C to machine lang - compare a simple C app with the compiled machine code of that program.
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- Brendan Gregg's Blog - is an industry expert in computing performance and cloud computing.
- Gynvael "GynDream" Coldwind - is a IT security engineer at Google.
- Michał "lcamtuf" Zalewski - white hat hacker, computer security expert.
- Mattias Geniar - developer, sysadmin, blogger, podcaster and public speaker.
- Nick Craver - software developer and systems administrator for Stack Exchange.
- Scott Helme - security researcher, speaker and founder of securityheaders.com and report-uri.com.
- Brian Krebs - The Washington Post and now an Independent investigative journalist.
- Bruce Schneier - is an internationally renowned security technologist, called a "security guru".
- Chrissy Morgan - advocate of practical learning, Chrissy also takes part in bug bounty programs.
- Andy Gill - is a hacker at heart who works as a senior penetration tester.
- Daniel Miessler - cybersecurity expert and writer.
- Samy Kamkar - is an American privacy and security researcher, computer hacker.
- Javvad Malik - is a security advocate at AlienVault, a blogger event speaker and industry commentator.
- Graham Cluley - public speaker and independent computer security analyst.
- Kacper Szurek - detection engineer at ESET.
- Troy Hunt - web security expert known for public education and outreach on security topics.
- raymii.org - sysadmin specializing in building high availability cloud environments.
- Robert Penz - IT security expert.
-
- Linux Audit - the Linux security blog about auditing, hardening and compliance by Michael Boelen.
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-Linux Security Expert - trainings, howtos, checklists, security tools, and more.
- The Grymoire - collection of useful incantations for wizards, be you computer wizards, magicians, or whatever.
- Secjuice - is the only non-profit, independent and volunteer led publication in the information security space.
- Decipher - security news that informs and inspires.
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- Tenable Podcast - conversations and interviews related to Cyber Exposure, and more.
- Sophos - threat news room, giving you news, opinion, advice and research on computer security issues.
- Tripwire State of Security - blog featuring the latest news, trends and insights on current security issues.
- Malwarebytes Labs Blog - security blog aims to provide insider news about cybersecurity.
- TrustedSec - latest news, and trends about cybersecurity.
- PortSwigger Web Security Blog - about web app security vulns and top tips from our team of web security.
- AT&T Cybersecurity blog - news on emerging threats and practical advice to simplify threat detection.
- Thycotic - where CISOs and IT Admins come to learn about industry trends, IT security, and more.
-
- Risky Business - is a weekly information security podcast featuring news and in-depth interviews.
- Cyber, by Motherboard - stories, and focus on the ideas about cybersecurity.
- Tenable Podcast - conversations and interviews related to Cyber Exposure, and more.
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-Cybercrime Investigations - podcast by Geoff White about cybercrimes.
- The many hats club - featuring stories from a wide range of Infosec people (Whitehat, Greyhat and Blackhat).
- Darknet Diaries - true stories from the dark side of the Internet.
- OSINTCurious Webcasts - is the investigative curiosity that helps people be successful in OSINT.
- Security Weekly - the latest information security and hacking news.
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- rev3rse security - offensive, binary exploitation, web app security, hardening, red team, blue team.
- LiveOverflow - a lot more advanced topics than what is typically offered in paid online courses - but for free.
- J4vv4D - the important information regarding our internet security.
-
-CyberTalks - talks, interviews, and article about cybersecurity.
-
- @blackroomsec - a white-hat hacker/pentester. Intergalactic Minesweeper Champion 1990.
- @MarcoCiappelli - Co-Founder @ITSPmagazine, at the intersection of IT security and society.
- @binitamshah - Linux Evangelist. Malwares. Kernel Dev. Security Enthusiast.
- @joe_carson - an InfoSec Professional and Tech Geek.
- @mikko - CRO at F-Secure, Reverse Engineer, TED Speaker, Supervillain.
- @esrtweet - often referred to as ESR, is an American software developer, and open-source software advocate.
- @gynvael - security researcher/programmer, @DragonSectorCTF founder/player, technical streamer.
- @x0rz - Security Researcher & Cyber Observer.
- @hasherezade - programmer, malware analyst. Author of PEbear, PEsieve, libPeConv.
- @TinkerSec - tinkerer, cypherpunk, hacker.
- @alisaesage - independent hacker and researcher.
- @SwiftOnSecurity - systems security, industrial safety, sysadmin, author of decentsecurity.com.
- @dakami - is one of just seven people with the authority to restore the DNS root keys.
- @samykamkar - is a famous "grey hat" hacker, security researcher, creator of the MySpace "Samy" worm.
- @securityweekly - founder & CTO of Security Weekly podcast network.
- @jack_daniel - @SecurityBSides co-founder.
- @thegrugq - Security Researcher.
- @matthew_d_green - a cryptographer and professor at Johns Hopkins University.
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- @haveibeenpwned - check if you have an account that has been compromised in a data breach.
- @bugcrowd - trusted by more of the Fortune 500 than any other crowdsourced security platform.
- @Malwarebytes - most trusted security company. Unmatched threat visibility.
- @sansforensics - the world's leading Digital Forensics and Incident Response provider.
- @attcyber - AT&T Cybersecurity’s Edge-to-Edge technologies provide threat intelligence, and more.
- @TheManyHatsClub - an information security focused podcast and group of individuals from all walks of life.
- @hedgehogsec - Hedgehog Cyber. Gibraltar and Manchester's top boutique information security firm.
- @NCSC - the National Cyber Security Centre. Helping to make the UK the safest place to live and work online.
- @Synacktiv - IT security experts.
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- How to Do Things at ARL - how to configure modems, scan images, record CD-ROMs, and other.*
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- Diffie-Hellman Key Exchange (short version) - how Diffie-Hellman Key Exchange worked.
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- Sandcat Browser - a penetration-oriented browser with plenty of advanced functionality already built in.
- Metasploit - tool and framework for pentesting system, web and many more.
- Burp Suite - tool for testing web app security, intercepting proxy to replay, inject, scan and fuzz.
- OWASP Zed Attack Proxy - intercepting proxy to replay, inject, scan and fuzz HTTP requests.
- w3af - is a Web Application Attack and Audit Framework.
- mitmproxy - an interactive TLS-capable intercepting HTTP proxy for penetration testers.
- Nikto2 - web server scanner which performs comprehensive tests against web servers for multiple items.
- sqlmap - tool that automates the process of detecting and exploiting SQL injection flaws.
- Recon-ng - is a full-featured Web Reconnaissance framework written in Python.
- AutoRecon - is a network reconnaissance tool which performs automated enumeration of services.
- Faraday - an Integrated Multiuser Pentest Environment.
- Photon - incredibly fast crawler designed for OSINT.
- XSStrike - most advanced XSS detection suite.
- Sn1per - automated pentest framework for offensive security experts.
- vuls - is an agent-less vulnerability scanner for Linux, FreeBSD, and other.
- tsunami - is a general purpose network security scanner with an extensible plugin system.
- aquatone - a tool for domain flyovers.
- BillCipher - information gathering tool for a website or IP address.
- WhatWaf - detect and bypass web application firewalls and protection systems.
- Corsy - CORS misconfiguration scanner.
- Raccoon - is a high performance offensive security tool for reconnaissance and vulnerability scanning.
- dirhunt - find web directories without bruteforce.
- John The Ripper - is a fast password cracker, currently available for many flavors of Unix, Windows, and other.
- hashcat - world's fastest and most advanced password recovery utility.
- p0f - is a tool to identify the players behind any incidental TCP/IP communications.
- ssh_scan - a prototype SSH configuration and policy scanner.
- LeakLooker - find open databases - powered by Binaryedge.io
- exploitdb - searchable archive from The Exploit Database.
- getsploit - is a command line utility for searching and downloading exploits.
- ctf-tools - some setup scripts for security research tools.
- pwntools - CTF framework and exploit development library.
- security-tools - collection of small security tools created mostly in Python. CTFs, pentests and so on.
- pentestpackage - is a package of Pentest scripts.
- python-pentest-tools - python tools for penetration testers.
- fuzzdb - dictionary of attack patterns and primitives for black-box application fault injection.
- AFL - is a free software fuzzer maintained by Google.
- AFL++ - is AFL with community patches.
- syzkaller - is an unsupervised, coverage-guided kernel fuzzer.
- pwndbg - exploit development and reverse engineering with GDB made easy.
- GDB PEDA - Python Exploit Development Assistance for GDB.
- IDA - multi-processor disassembler and debugger useful for reverse engineering malware.
- radare2 - framework for reverse-engineering and analyzing binaries.
- routersploit - exploitation framework for embedded devices.
- Ghidra - is a software reverse engineering (SRE) framework.
- Cutter - is an SRE platform integrating Ghidra's decompiler.
- Vulnreport - open-source pentesting management and automation platform by Salesforce Product Security.
- Mentalist - is a graphical tool for custom wordlist generation.
- archerysec - vulnerability assessment and management helps to perform scans and manage vulnerabilities.
- Osmedeus - fully automated offensive security tool for reconnaissance and vulnerability scanning.
- beef - the browser exploitation framework project.
- AutoSploit - automated mass exploiter.
- SUDO_KILLER - is a tool to identify and exploit sudo rules' misconfigurations and vulnerabilities.
- yara - the pattern matching swiss knife.
- mimikatz - a little tool to play with Windows security.
- sherlock - hunt down social media accounts by username across social networks.
- OWASP Threat Dragon - is a tool used to create threat model diagrams and to record possible threats.
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- PTES - the penetration testing execution standard.
- Pentests MindMap - amazing mind map with vulnerable apps and systems.
- WebApps Security Tests MindMap - incredible mind map for WebApps security tests.
- Brute XSS - master the art of Cross Site Scripting.
- XSS cheat sheet - contains many vectors that can help you bypass WAFs and filters.
- Offensive Security Bookmarks - security bookmarks collection, all things that author need to pass OSCP.
- Awesome Pentest Cheat Sheets - collection of the cheat sheets useful for pentesting.
- Awesome Hacking by HackWithGithub - awesome lists for hackers, pentesters and security researchers.
- Awesome Hacking by carpedm20 - a curated list of awesome hacking tutorials, tools and resources.
- Awesome Hacking Resources - collection of hacking/penetration testing resources to make you better.
- Awesome Pentest - collection of awesome penetration testing resources, tools and other shiny things.
- Awesome-Hacking-Tools - is a curated list of awesome Hacking Tools.
- Hacking Cheat Sheet - author hacking and pentesting notes.
- blackhat-arsenal-tools - official Black Hat arsenal security tools repository.
- Penetration Testing and WebApp Cheat Sheets - the complete list of Infosec related cheat sheets.
- Cyber Security Resources - includes thousands of cybersecurity-related references and resources.
- Pentest Bookmarks - there are a LOT of pentesting blogs.
- Cheatsheet-God - Penetration Testing Reference Bank - OSCP/PTP & PTX Cheatsheet.
- ThreatHunter-Playbook - to aid the development of techniques and hypothesis for hunting campaigns.
- Beginner-Network-Pentesting - notes for beginner network pentesting course.
- OSCPRepo - is a list of resources that author have been gathering in preparation for the OSCP.
- PayloadsAllTheThings - a list of useful payloads and bypass for Web Application Security and Pentest/CTF.
- payloads - git all the Payloads! A collection of web attack payloads.
- command-injection-payload-list - command injection payload list.
- Awesome Shodan Search Queries - great search queries to plug into Shodan.
- AwesomeXSS - is a collection of Awesome XSS resources.
- php-webshells - common php webshells.
- Pentesting Tools Cheat Sheet - a quick reference high level overview for typical penetration testing.
- OWASP Cheat Sheet Series - is a collection of high value information on specific application security topics.
- OWASP dependency-check - is an open source solution the OWASP Top 10 2013 entry.
- OWASP ProActive Controls - OWASP Top 10 Proactive Controls 2018.
- PENTESTING-BIBLE - hacking & penetration testing & red team & cyber security resources.
- pentest-wiki - is a free online security knowledge library for pentesters/researchers.
- DEF CON Media Server - great stuff from DEFCON.
- Awesome Malware Analysis - a curated list of awesome malware analysis tools and resources.
- SQL Injection Cheat Sheet - detailed technical stuff about the many different variants of the SQL Injection.
- Entersoft Knowledge Base - great and detailed reference about vulnerabilities.
- HTML5 Security Cheatsheet - a collection of HTML5 related XSS attack vectors.
- XSS String Encoder - for generating XSS code to check your input validation filters against XSS.
- GTFOBins - list of Unix binaries that can be exploited by an attacker to bypass local security restrictions.
- Guifre Ruiz Notes - collection of security, system, network and pentest cheatsheets.
- SSRF Tips - a collection of SSRF Tips.
- shell-storm repo CTF - great archive of CTFs.
- ctf - CTF (Capture The Flag) writeups, code snippets, notes, scripts.
- My-CTF-Web-Challenges - collection of CTF Web challenges.
- MSTG - The Mobile Security Testing Guide (MSTG) is a comprehensive manual for mobile app security testing.
- Internal-Pentest-Playbook - notes on the most common things for an Internal Network Penetration Test.
- KeyHacks - shows quick ways in which API keys leaked by a bug bounty program can be checked.
- securitum/research - various Proof of Concepts of security research performed by Securitum.
- public-pentesting-reports - is a list of public pentest reports released by several consulting security groups.
- awesome-bug-bounty - is a comprehensive curated list of available Bug Bounty.
- bug-bounty-reference - is a list of bug bounty write-ups.
- Awesome-Bugbounty-Writeups - is a curated list of bugbounty writeups.
- Bug bounty writeups - list of bug bounty writeups (2012-2020).
- hackso.me - a great journey into security.
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- PHP-backdoors - a collection of PHP backdoors. For educational or testing purposes only.
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- Weakpass - for any kind of bruteforce find wordlists or unleash the power of them all at once!
- Hashes.org - is a free online hash resolving service incorporating many unparalleled techniques.
- SecLists - collection of multiple types of lists used during security assessments, collected in one place.
- Probable-Wordlists - sorted by probability originally created for password generation and testing.
- skullsecurity passwords - password dictionaries and leaked passwords repository.
- Polish PREMIUM Dictionary - official dictionary created by the team on the forum bezpieka.org.* 1
- statistically-likely-usernames - wordlists for creating statistically likely username lists.
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- YesWeHack - bug bounty platform with infosec jobs.
- Openbugbounty - allows any security researcher reporting a vulnerability on any website.
- hackerone - global hacker community to surface the most relevant security issues.
- bugcrowd - crowdsourced cybersecurity for the enterprise.
- Crowdshield - crowdsourced security & bug bounty management.
- Synack - crowdsourced security & bug bounty programs, crowd security intelligence platform, and more.
- Hacktrophy - bug bounty platform.
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- OWASP-VWAD - comprehensive and well maintained registry of all known vulnerable web applications.
- DVWA - PHP/MySQL web application that is damn vulnerable.
- metasploitable2 - vulnerable web application amongst security researchers.
- metasploitable3 - is a VM that is built from the ground up with a large amount of security vulnerabilities.
- DSVW - is a deliberately vulnerable web application written in under 100 lines of code.
- OWASP Mutillidae II - free, open source, deliberately vulnerable web-application.
- OWASP Juice Shop Project - the most bug-free vulnerable application in existence.
- OWASP Node js Goat Project - OWASP Top 10 security risks apply to web apps developed using Node.js.
- juicy-ctf - run Capture the Flags and Security Trainings with OWASP Juice Shop.
- SecurityShepherd - web and mobile application security training platform.
- Security Ninjas - open source application security training program.
- hackazon - a modern vulnerable web app.
- dvna - damn vulnerable NodeJS application.
- django-DefectDojo - is an open-source application vulnerability correlation and security orchestration tool.
- Google Gruyere - web application exploits and defenses.
- Bodhi - is a playground focused on learning the exploitation of client-side web vulnerabilities.
- Websploit - single vm lab with the purpose of combining several vulnerable appliations in one environment.
- vulhub - pre-built Vulnerable Environments based on docker-compose.
- CloudGoat 2 - the new & improved "Vulnerable by Design"
-AWS deployment tool.
- secDevLabs - is a laboratory for learning secure web development in a practical manner.
- CORS-vulnerable-Lab - sample vulnerable code and its exploit code.
- RootTheBox - a Game of Hackers (CTF Scoreboard & Game Manager).
- KONTRA - application security training (OWASP Top Web & Api).
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- Offensive Security - true performance-based penetration testing training for over a decade.
- Hack The Box - online platform allowing you to test your penetration testing skills.
- Hacking-Lab - online ethical hacking, computer network and security challenge platform.
- pwnable.kr - non-commercial wargame site which provides various pwn challenges.
- Pwnable.tw - is a wargame site for hackers to test and expand their binary exploiting skills.
- picoCTF - is a free computer security game targeted at middle and high school students.
- CTFlearn - is an online platform built to help ethical hackers learn and practice their cybersecurity knowledge.
- ctftime - CTF archive and a place, where you can get some another CTF-related info.
- Silesia Security Lab - high quality security testing services.
- Practical Pentest Labs - pentest lab, take your Hacking skills to the next level.
- Root Me - the fast, easy, and affordable way to train your hacking skills.
- rozwal.to - a great platform to train your pentesting skills.
- TryHackMe - learning Cyber Security made easy.
- hackxor - is a realistic web application hacking game, designed to help players of all abilities develop their skills.
- Hack Yourself First - it's full of nasty app sec holes.
- OverTheWire - can help you to learn and practice security concepts in the form of fun-filled games.
- Wizard Labs - is an online Penetration Testing Lab.
- PentesterLab - provides vulnerable systems that can be used to test and understand vulnerabilities.
- RingZer0 - tons of challenges designed to test and improve your hacking skills.
- try2hack - several security-oriented challenges for your entertainment.
- Ubeeri - preconfigured lab environments.
- Pentestit - emulate IT infrastructures of real companies for legal pen testing and improving pentest skills.
- Microcorruption - reversal challenges done in the web interface.
- Crackmes - download crackmes to help improve your reverse engineering skills.
- DomGoat - DOM XSS security learning and practicing platform.
- Stereotyped Challenges - upgrade your web hacking techniques today!
- Vulnhub - allows anyone to gain practical 'hands-on' experience in digital security.
- W3Challs - is a penetration testing training platform, which offers various computer challenges.
- RingZer0 CTF - offers you tons of challenges designed to test and improve your hacking skills.
- Hack.me - a platform where you can build, host and share vulnerable web apps for educational purposes.
- HackThis! - discover how hacks, dumps and defacements are performed and secure your website.
- Enigma Group WebApp Training - these challenges cover the exploits listed in the OWASP Top 10 Project.
- Reverse Engineering Challenges - challenges, exercises, problems and tasks - by level, by type, and more.
- 0x00sec - the home of the Hacker - Malware, Reverse Engineering, and Computer Science.
- We Chall - there are exist a lots of different challenge types.
- Hacker Gateway - is the go-to place for hackers who want to test their skills.
- Hacker101 - is a free class for web security.
- contained.af - a stupid game for learning about containers, capabilities, and syscalls.
- flAWS challenge! - a series of levels you'll learn about common mistakes and gotchas when using AWS.
- CyberSec WTF - provides web hacking challenges derived from bounty write-ups.
- CTF Challenge - CTF Web App challenges.
- gCTF - most of the challenges used in the Google CTF 2017.
- Hack This Site - is a free, safe and legal training ground for hackers.
- Attack & Defense - is a browser-based cloud labs.
- Cryptohack - a fun platform for learning modern cryptography.
- Cryptopals - the cryptopals crypto challenges.
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- fbctf - platform to host Capture the Flag competitions.
- ctfscoreboard - scoreboard for Capture The Flag competitions.
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- Bugcrowd University - open source education content for the researcher community.
- OSCPRepo - a list of resources and scripts that I have been gathering in preparation for the OSCP.
- OWASP Top 10: Real-World Examples - test your web apps with real-world examples (two-part series).
- phrack.org - an awesome collection of articles from several respected hackers and other thinkers.
- Practical-Ethical-Hacking-Resources - compilation of resources from TCM's Udemy Course.
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- Feedly - organize, read and share what matters to you.
- Inoreader - similar to feedly with a support for filtering what you fetch from rss.
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- #hackerspaces - hackerspace IRC channels.
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- The Hacker News - leading news source dedicated to promoting awareness for security experts and hackers.
- Latest Hacking News - provides the latest hacking news, exploits and vulnerabilities for ethical hackers.
- Security Newsletter - security news as a weekly digest (email notifications).
- Google Online Security Blog - the latest news and insights from Google on security and safety on the Internet.
- Qualys Blog - expert network security guidance and news.
- DARKReading - connecting the Information Security Community.
- Darknet - latest hacking tools, hacker news, cybersecurity best practices, ethical hacking & pen-testing.
- publiclyDisclosed - public disclosure watcher who keeps you up to date about the recently disclosed bugs.
- Reddit - Hacking - a subreddit dedicated to hacking and hackers.
- Packet Storm - information security services, news, files, tools, exploits, advisories and whitepapers.
- Sekurak - about security, penetration tests, vulnerabilities and many others (PL/EN).
- nf.sec - basic aspects and mechanisms of Linux operating system security (PL).
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- Changelog - is a community of hackers; news & podcasts for developers and hackers.
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- Unbound DNS Tutorial - a validating, recursive, and caching DNS server.
- Knot Resolver on Fedora - how to get faster and more secure DNS resolution with Knot Resolver on Fedora.
- DNS-over-HTTPS - tutorial to setup your own DNS-over-HTTPS (DoH) server.
- dns-over-https - a cartoon intro to DNS over HTTPS.
- DNS-over-TLS - following to your DoH server, setup your DNS-over-TLS (DoT) server.
- DNS Servers - how (and why) i run my own DNS Servers.
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- OpenSSL Certificate Authority - build your own certificate authority (CA) using the OpenSSL tools.
- step-ca Certificate Authority - build your own certificate authority (CA) using open source step-ca.
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- os-tutorial - how to create an OS from scratch.
- Write your Own Virtual Machine - how to write your own virtual machine (VM).
- x86 Bare Metal Examples - dozens of minimal operating systems to learn x86 system programming.
- simple-computer - the scott CPU from "But How Do It Know?" by J. Clark Scott.
- littleosbook - the little book about OS development.
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