Free Conficker Worm Scanner
The Conficker worm is a very formidable threat to modern-day networks. The worm uses multiple methods to infect remote systems, and utilizes a very advanced P2P architecture in order to communicate with other infected systems. Furthermore, it has shown signs of an advanced update mechanism that would allow infected systems to rapidly received updates in order to evade detection or to be used in some malicious manner.
Retina Community is a free vulnerability assessment scanner that scans for Conficker and allows network administrators to rapidly assess their networks in order to find hosts that are infected by Conficker, or are missing the most critical patch necessary to blocking Conficker network propagation attacks.