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   $ jamming
      (N) An attack that attempts to interfere with the reception of
      broadcast communications. (See: anti-jam, denial of service.
      Compare: flooding.)

      Tutorial: Jamming uses "interference" as a type of "obstruction"
      intended to cause "disruption". Jamming a broadcast signal is
      typically done by broadcasting a second signal that receivers
      cannot separate from the first one. Jamming is mainly thought of
      in the context of wireless communication, but also can be done in
      some wired technologies, such as LANs that use contention
      techniques to share a broadcast medium.

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