For the offense, one would utilize electronic jamming, electronic deception, directed-energy weapons, and electromagnetic pulse weapons.

CENTERFORSECURITYPOLICY: Center for Security Policy | Chinese Information Warfare: A Phantom Menace or Emerging Threat? | Page: 9

Additional concerns remain about the vulnerability of the communications signals to electronic jamming, though there's no evidence that has occurred, said people familiar with reports on the matter.

WSJ: Insurgents Hack U.S. Drones

So doubt about the dependability of stealth combined with the proliferation of digital communications devices to produce a rebirth of interest in jamming and other facets of electronic warfare.

FORBES: In Digital Age, U.S. Military Still Stuck With Vietnam-Era Jammers

The planes are equipped with radar-jamming equipment capable of knocking out electronic devices.

BBC: Australian Prime Minister Julia Gillard

Jamming devices in the Sistine Chapel should block all electronic communication and anyone tweeting would in any case risk being excommunicated.

BBC: Rome conclave: Cardinals begin voting for new Pope