The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.

Comprehensive Python Cheatsheet

The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics.

A repository of LIVE malwares for your own joy and pleasure. theZoo is a project created to make the possibility of malware analysis open and available to the public.

Automated Adversary Emulation Platform

One of a few malware collections on the GitHub.

An open source practical cryptography course for CTF player