PLC

The Amazing Mr. Stuxnet


Week after week, the Stuxnet worm continues to amuse and astound all of us that have studied it. Last week it was Ralph Langner’s detailed analysis that showed Stuxnet wasn’t just infecting Windows boxes and stealing data, it was specifically designed to modify PLC logic so it could destroy a physical process.


© Tofino Security 2013 | All Rights Reserved | Tofino Security is a Belden Brand


Stuxnet - I was wrong


Back in July when Stuxnet first became public, I wrote in our Siemens PCS7 WinCC Malware White Paper and told anyone that would listen that Stuxnet was targeted at stealing intellectual property from process systems.


© Tofino Security 2013 | All Rights Reserved | Tofino Security is a Belden Brand


Using Modbus PLC's? Here's How To Protect Them


Last week I wrote about a malicious attack on an industrial control system (ICS) initiated by outsiders. This week I'll discuss a PLC accident caused by an insider, and suggest some possible solutions for both of these incidents.

 


© Tofino Security 2013 | All Rights Reserved | Tofino Security is a Belden Brand


Sample ICS Security Incident: Hackers Shut Down Crude Oil Loading Terminal For 8 Hours


We had a request recently from a reader to provide an example of a malicious attack by outsiders on a control system, how it was done, and what impact it had on the plant and the owner. This is surprisingly tough to do, because according to RISI the vast majority of security incidents are internal and/or accidental in nature.


© Tofino Security 2013 | All Rights Reserved | Tofino Security is a Belden Brand


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