What free/cheap interactive tutorials and lessons have you enjoyed?
So far, I plan to:
- Work through the Bandit box on OverTheWire.org [1]
- Talk about social engineering with the Social Engineer Toolkit [2]
- Practice CTFs with PicoCTF [3]
- ... hack the planet?
[1] https://overthewire.org/wargames/bandit/
[2] https://github.com/trustedsec/social-engineer-toolkit
[3] https://picoctf.org/