Very true, error handling is critical in any real time system, but I could not imagine using a standard non-RT OS (windows, unix, or any other "consumer" OS)for regulating a nuclear system. This was a PLC, not a do-it-all modified "Windows for Nuclear Reactors". I would think they are using an engineered VXWorks or other custom Real-Time OS or Core. Sounds like an FPGA or DSP went for a loop. hmmm, was it likely terrorists, or an anomolous clock signal throwing off a networked FIFO ACK REQ line... Regardless it is a n error and a threat. (today's PLC's are a threat in any application)

[ reply ]

Link to this comment: http://www.securityfocus.com/comments/articles/11465/34600#34600