Cyberweapons is the name of a computational algorithm or device that can be used to inflict damage. them ipact may be purely in the digital realm, for examplel, disrupting communications, but may also target physical infrastructure. Probably the first example of the former was Stuxnet, which, in the late 2000s, targeted Iranian centrifuges used for nuclear processing.
Used on Chap. 20: page 488