jamming

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.