Resources

Informative Online Blogs

krebsonsecurity.com

schneier.com

troyhunt.com

Online Hacking Resources

hack.me

hackthissite.org

hackaday.com

hacking-lab.com

Hacking Competitions

iCTF

Global Cyberlympics

DARPA Cyber Grand Challenge

DEFCON CTF

Extras

The Code Book (Simon Singh) - Very readable summary of pre-90s crypto

cryptopals.com - More advanced crypto programming challenges

Free Hash Cracker

Salted Password Hashing Tutorial

Keys Under Doormats - a famous cryptographer (the "R" in "RSA")'s perspective on the recent so-called "Crypto Wars"

Internet Map