PLCs Crashed by IT Audit

Event Year: 1995 Reliability: Confirmed
Country: United States
Industry Type: Food & Beverage

A security consultant was scanning the food companies business and process networks for vulnerabilities. Probe packets containing deliberately malformed entered the Ethernet-based process control network and caused all PLCs to hard fault. The packets contained malformed ICMP Redirects messages with a subcode of 4 or greater.


The loss of production was estimated to be over $1,000,000 USD