Attack that intercepts and accesses data and other information contained in a flow in a communication system [11].

  • NOTE: Although the term originally referred to making a mechanical connection to an electrical conductor that links two nodes, it is now used to refer to reading information from any sort of medium used for a link or even directly from a node, such as a gateway or subnetwork switch.
  • NOTE: “Active wiretapping” attempts to alter the data or otherwise affect the flow; “passive wiretapping” only attempts to observe the flow and gain knowledge of information it contains

Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard

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