Abnormality detection for isolating a control system
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United States of America Patent
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May 31, 2016
Grant Date -
Jun 13, 2013
app pub date -
Feb 13, 2013
filing date -
Feb 15, 2011
priority date (Note) -
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Abstract
A mechanism is provided for effectively detecting an abnormality occurring in a control system and isolating the control system in which abnormality is acknowledged. The mechanism receives, from one or more control systems in the plurality of control systems, respective abnormality notifications for respective counter control systems to be monitored by the plurality of control systems. The mechanism adds up abnormality notifications transmitted from respective monitoring sections of the plurality of control systems so as to evaluate the reputation of a control system suspected to have an abnormality. The mechanism causes a protected area for operating the control system suspected to have an abnormality to restrict outbound traffic from at least the inside of the protected area, when an indication is identified that the control system is abnormal according to criteria from a result of the evaluation.
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