A Widespread Logic Controller Flaw Raises the Specter of Stuxnet More than 120 models of Siemens’ S7-1500 PLCs contain a serious vulnerability—and no fix is on the way. Courtesy of Siemens ...

programmable logic controllers Hard-coded key vulnerability in Logix PLCs has severity score of 10 out of 10 Critical authentication bypass flaw affects the entire Logix product line.

The Allen-Bradley Micro850 and Micro870 programmable logic controller (PLC) systems use Class 1 implicit messaging capability for connectivity and design efficiency. Resources. Members.