New Stuxnet White Paper: Analysis of the Siemens WinCC / PCS7 “Stuxnet” Malware for Industrial Control System Professionals.
Stuxnet is a computer worm designed to take advantage of a number of previously unknown vulnerabilities present in the Windows operating system and Siemens SIMATIC WinCC, PCS7 and S7 product lines.
It was designed to target one or more industrial systems that use Siemens PLCs with the apparent objective of sabotaging industrial processes.
This White Paper summarizes the current known facts about the Stuxnet worm and the actions that operators of SCADA and ICS systems can take to protect critical operations.
Also included is Joel Langill's excellent video that shows in detail how Stuxnet infects a system.