Tutorial on GnuPG’s features to sign, verify, encrypt, and decrypt files and messages for distribution over untrusted channels like the internet.

Animation of the AES algorithm.

Damn Vulnerable Linux (DVL) is everything a good Linux distribution isn’t. Its developers have spent hours stuffing it with broken, ill-configured, outdated, and exploitable software that makes it vulnerable to attacks. DVL isn’t built to run on your desktop - it’s a learning tool for security students.

With notes, slides, and labs