PatchLink Update Is the leader in Patch Management Software Solutions for Enterprise Network Security. PatchLink Update is fully Internet-based, automated, cross-platform, security patch management software for enterprise wide discovery and deployment of critical updates, patches, hotfixes, service packs and software and resolving security vulnerabilities across operating systems and applications. PatchLink is the #1 Patch Management Software Tool for Enterprise Network Security.

tips and tricks - CASEScontact is an information security site providing tips and tricks for home users and SMEs (Small and Medium-Sized Enterprises) for FREE (How to protect against threats, vulnerabilities, privacy, encryption, viruses, worms, Trojans, spyware etc.). [RSS]

MakeSecure.com is designed to facilitate discussion on security related topics, create network security awareness, and provide secure solutions.

Vulnerability and Virus Information - Secunia

eVuln.com - Penetration Tests & Security Advisories List

Vulnerability and patch alerts [RSS]

Center for Education and Research in Information Assurance and Security. University center for multidisciplinary research and education in areas of information security.

Fee based patch alert service.

Searchable database of vulnerabilities. Offers data for download in XML format as well as via website. Details of how to submit new vulnerabilities, database schema and FAQ.

Mailing list dedicated to the discussion of patch management.