Security Holes/Hacks                                                    Security
                                                                                                  

Attrition.org
        Security/hacker/site defacement news. Part of the growing field of "gray sites",
        offering security news and info to both the white hats (sys admins, security
        professionals) and the black hats (crackers).

HNN
        The Hacker News Network, providing news and opinions for the hacker community.
        Another gray site.

Rootshell
        Known exploits for online programs including UNIX etc. Searchable and continuously
        updated, useful for sysops (and hackers) to keep up-to-date on where their systems
        need patching.