ITSecurity

IT Security certifications

1. CISSP - Certified Information Services Security Professional

2. OSSTMM - OPSA

IT security tools

1. Helix - a live Linux distribution oriented to Computer Forensics

2. BackTrack

3. Brutus

4. HammerOfGod tools

IT security sites

1. FOSDEM - Free and Open Source Software Developers' European Meeting

2. PacketStorm

3. OWASP

4. Sleuthkit

5. The Hacker Webzine