Eleventh Alliance
- http://www.11a.nu/
- Offers details regarding select viruses, overflow and security exploits, bios tools, and crytography. Also features book reviews on assembly programming and computer security.
Nomad Mobile Research Centre
- http://www.nmrc.org/
- Hacker lab engaged in vulnerabilities research. Security papers, full disclosure advisories and current projects. Also features a FAQ on hacking techniques.
Razor
- http://www.bindview.com/Services/Razor/
- Team of security researchers. Features news, original papers and advisories, presentations they have given, and tools they have written.
Xfocus
- http://www.xfocus.org/
- Organization dedicated to the research and demonstration of vulnerabilities in network services and communication security. Offers papers, security tools, exploit code, advisories and a discussion forum.