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Illegal communication detector, illegal communication detector control method, and storage medium storing program for illegal communication detector control

  • US 7,487,368 B2
  • Filed: 04/07/2004
  • Issued: 02/03/2009
  • Est. Priority Date: 07/25/2003
  • Status: Active Grant
First Claim
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1. An illegal communication detector that is mounted in a communication path between specific devices and a protection-targeted device to monitor contents of communications delivered to the protection-targeted device, the illegal communication detector comprising:

  • a recorder that records at least part of information transmitted from the specific devices to the protection-targeted device; and

    a detector that regards one of the specific devices as a device of interest and detects, when at least part of the recorded information transmitted from the device of interest complies with a predetermined illegal communication standard rule, that the contents of communication are derived from an illegal communication,wherein the illegal communication standard rule is formulated according to a number of an item of method information included in the recorded information.

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