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1. (WO2017201520) SYSTEMS AND METHODS FOR DETECTING ANOMALOUS SOFTWARE ON A PROGRAMMABLE LOGIC CONTROLLER

Pub. No.:    WO/2017/201520    International Application No.:    PCT/US2017/033756
Publication Date: Fri Nov 24 00:59:59 CET 2017 International Filing Date: Tue May 23 01:59:59 CEST 2017
IPC: G05B 11/01
G05B 19/05
G06F 9/45
G06F 11/07
Applicants: GEORGIA TECH RESEARCH CORPORATION
Inventors: FORMBY, David
BEYAH, Abdul Raheem
Title: SYSTEMS AND METHODS FOR DETECTING ANOMALOUS SOFTWARE ON A PROGRAMMABLE LOGIC CONTROLLER
Abstract:
There is provided a method including: during a training period, collecting a plurality of scan cycle times of a programmable logic controller (PLC) program executing on a PLC; calculating one or more baseline parameters based on the plurality of scan cycle times; determining a baseline PLC program signature based on the one or more baseline statistical parameters; and storing the baseline PLC program signature.