To ensure the safety and security of the process, company, and staff, find the vulnerabilities and break a negative chain of events Included among the systems to be scanned was a new Ethernet network on the production floor that connected all the programmable logic controllers (PLCs). Unfortunately, when the scanner software sent out a certain class of ICMP redirect messages, all the PLCs crashed, resulting in reported production losses exceeding dollar1 million. These PLCs had serious, but undocumented, vulnerabilities in their communications firmware, enabling a single malformed packet to crash them.
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