CERT Coordination Center - Studies Internet security vulnerabilities, provides incident response services, and publishes security alerts and computer virus information.
(AU)AusCERT - Australian Computer Emergency Response Team. Monitors and evaluates global computer network threats and vulnerabilities.
CERT Polska - Deals with security-related incidents related to Polish networks.
SingCERT - Facilitates the detection, resolution and prevention of security-related incidents on the Internet.