Stuxnet Report I: A System Attack

Stuxnet is a sophisticated piece of computer malware designed to sabotage industrial processes controlled by Siemens SIMATIC WinCC and PCS 7 control systems
By Eric Byres, Andrew Ginter and Joel Langill March 14, 2011

Stuxnet is a sophisticated piece of computer malware designed to sabotage industrial processes controlled by Siemens SIMATIC WinCC and PCS 7 control systems. The worm used known and previously unknown vulnerabilities to install, infect and propagate, and was powerful enough to evade state-of-the-art security technologies and procedures.

Since its discovery, there has been extensive analysis of Stuxnet’s internal workings. What has not been discussed is how the worm might have migrated from the outside world to supposedly isolated and secure industrial control systems (ICS). Understanding the routes that a directed worm takes as it targets an ICS is critical if automation professionals want to close off these vulnerable pathways to future worms.

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