Targeting Control and Safety Instrumented Systems (SIS): new escalation of cyber threats to critical [energy] infrastructure

“It is no use saying, ‘We are doing our best.’ You have got to succeed in doing what is necessary.” – Winston Churchill Introduction Industrial Control and Safety systems play an important part in insuring that the physical processes taking place in a manufacturing plant, power generation facility or other segment of critical infrastructure do […]

What was that Purdue Model stuff, anyway?

The Purdue Enterprise Reference Architecture (commonly known as the Purdue Model) for control systems is old. People have forgotten what it originally was about. When it was first introduced, the big concern behind the Purdue Model was keeping computing and networks deterministic so that they wouldn’t fault. Toward that end, it introduced network segmentation as […]

Complex control systems used by ships at sea are subject to the same kinds of accidents and challenges.

“This is where you talk about fleets coming to a stop. Our ships are floating SCADA systems” – Capt. Mark Hagerott (ret.), Deputy director of cybersecurity for the U.S.N. Academy (1) Many years ago I had the good fortune to have two good friends who both owned wooden (African Mahogany) sailing boats. One was a […]