Embedded PLC Web Servers a Vector to New Class of OT Malware – GovInfoSecurity

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Fusty and fussy operational technology devices are probably the farthest things away from a web server. Except – not anymore.

Programmable logic controllers – digital devices that control the operation of physical processes in settings such as factories and the electrical grid – once relied on serial communication protocols, but they now contain embedded web servers. The upside is convenience, since administrators can configure application programming interfaces to control operations and enable browser-based control.

Out are clunky human-machine interface clients configured with knotty proprietary software; in are flat screens and touch-enabled control.

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