Tag Archives: cyber-physical systems

Cybersecurity Lessons from the Pandemic – Positive and Negative Feedback

– Systems use negative feedback in order to converge to stability and equilibrium (a positive quest). Positive-feedback systems diverge, which leads to instability and sometimes surging out of control (usually a negative outcome). Negative feedback inhibits and positive feedback amplifies. Each has…

Outsourcing, Cost Cutting and the Boeing 737 Max Debacle

– When we thought that Boeing had come up with ways to mitigate the risks that resulted in two major air crashes, we learn that Boeing has been outsourcing their software development to Indian companies that hired newbie temporary programmers for as little as $9 per hour, as described in a June 28,…

Security and Safety Co-Engineering Revisited

– There are those who denigrate such websites as ResearchGate and Academia.edu because they are for-profit, which is a discussion that I will not get into here. If this particular argument is of interest to you, you should read the Discover magazine piece “Who Isn’t Profiting Off the Backs of…

November 2013 was Critical Infrastructure Security and Resilience Month … Were You Involved?

– Did you know that, on October 31, 2013, President Obama proclaimed November 2013 to be “Critical Infrastructure Security and Resilience Month”? You can see the proclamation at…

Oil Rigs’ Software Attacked by Malware

– In the February 23, 2013 Houston Chronicle, there is an article “Malware on oil rig computers raises security fears” by Zain Shauk, which describes how malware has infiltrated safety-critical software managing the activities and control systems of oil rigs. Shauk’s article is available at…