http://www.cert.org

 

http://www.cert.org/nav/index_red.html

 

http://www.us-cert.gov

 

http://www.us-cert.gov/current/

 

Cisco Security Advisories

Cisco is announcing program changes for the publication schedule for Cisco Internetwork Operating System (IOS) Security Advisories.

Starting on March 26, 2008, Cisco will release bundles of IOS Security Advisories on the fourth Wednesday of the month in March and September of each calendar year.

 

This schedule change will not restrict us from promptly publishing an individual IOS Security Advisory for a serious vulnerability which is publicly disclosed or for which we are aware of active exploitation.

 

Cisco is adopting this approach in response to extensive feedback from customers, who seek further predictability for support planning and deployment cycles.

 

The current format of IOS Security Advisories will remain the same. The software table in the Advisory includes a list of recommended releases (where possible) for each software train that addresses all of the security vulnerabilities included in the bundle.

 

http://www.cisco.com/en/US/products/products_security_advisories_listing.html

 

Linux Security Advisories

Up-To-Date Linux Advisories

http://www.linuxsecurity.com/

 

Microsoft Security Advisories

Microsoft Security Advisories, a supplement to the Microsoft Security Bulletins, address security changes that may not require a security bulletin but that may still affect customers' overall security.

Microsoft Security Advisories are a way for Microsoft to communicate security information to customers about issues that may not be classified as vulnerabilities and may not require a security bulletin. Each advisory will be accompanied with a unique Microsoft Knowledge Base Article number for reference to provide additional information about the changes.

http://www.microsoft.com/technet/security/advisory/default.mspx