The Internet tracking itself.

“The Internet Storm Center was created in 2001 following the successful detection, analysis, and widespread warning of the Li0n worm. Today, the ISC provides a free analysis and warning service to thousands of Internet users and organizations, and is actively working with Internet Service Providers to fight back against the most malicious attackers.”

http://isc.sans.org/index.php

“The CERT® Coordination Center is a center of Internet security expertise, located at the Software Engineering Institute, a federally funded research and development center operated by Carnegie Mellon University. It publishes daily advisories and incident notices concerning security bugs plus network security alerts.”

http://www.cert.org/