CERT Coordination Center
- The CERT Coordination Center studies Internet security vulnerabilities, provides incident response services to sites that have been the victims of attack, publishes a variety of security alerts, researches security and survivability in wide-area-networked computing, and develops information to help you improve security at your site.
CERIAS Hotlist - The CCERIAS hotlist is the most comprehensive security site on the WWW, covering all aspects of security.
Patch Management Forum - Mailing list facilitates networking and information exchange related to patch management: announcements, testing, verification, operations processes, and vulnerabilities.
PatchManagement.org - Mailing list dedicated to the discussion of patch management.
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