Intrusion detection via semantic fuzzing and message provenance

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United States of America Patent

PATENT NO 11689544
APP PUB NO 20190089722A1
SERIAL NO

16085199

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Abstract

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Intrusion detection systems and methods monitor legal control messages in an operational control system to detect subtly malicious sequences of control messages with undesirable emergent effects on devices in the operational control system. A message provenance component may investigate system-level correlations between messages rather than detecting if individual messages are anomalous. A semantic fuzzing component may search, based on the operational effect of candidate message sequences, the space of legal messages for sequences that cause actual harm. Behavior oracles may be used to test message sequences to identify sequences that induce drift towards a failure state. The intrusion detection system is able to prevent harm and disruption arising from control messages that individually appear legitimate and benign but that, in combination with other messages, can cause undesirable outcomes.

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Patent Owner(s)

  • SRI - INTERNATIONAL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ciocarlie, Gabriela New York, US 4 23
Corbett, Cherita Rockville, US 1 11
Jovanovic, Dejan Brooklyn, US 22 673
Locasto, Michael E Lebanon, US 13 959

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