|Mostly General Security, as there are very few Mac-focused sites out ther. |
http://packetstorm.securify.com/ One of the biggest and best Exploit archives on the net.
http://www.net-security.org/ Excellent Security information and news - special mac sections.
http://www.pure-security.net/ - good, general site.
http://www.mindsec.com/ News, reviews, advisories and more
http://www.403-security.org/ "Ultimate resource for security material"
http://securityfocus.net/ news, tools, announcements, home of BuqTraq(?)
http://www.security-source.net - good archives, special project
http://www.securitysearch.com/ - search security Jobs, companies, etc.
http://www.securemac.com - decent, but still in beta.