The Stuxnet malware is a game changer for critical information infrastructure protection, an EU security agency has warned.

ENISA (European Network and Information Security Agency) warns that a similar attack of malware capable of sabotaging industrial control systems as Stuxnet may occur in future.

The worm, whose primary method of entry into systems is infected USBs, essentially ignores vulnerable Windows boxes but aggressively attacks industrial control (SCADA) systems from Siemens, establishing a rootkit as well as a backdoor connection to two (now disconnected) command and control servers in Malaysia and Denmark.

Erm why are critical SCADA systems running on the same network as any non-critical machines?

And why are people plugging unchecked USB sticks into critical business systems? FFS!
Jon