Frank Cilluffo, an expert formerly at the White House, says that the attack's signature suggests that more than one group was at work, with small-time hackers following the initial huge sorties.

ECONOMIST: Cyberwarfare

"Afghan national security forces and coalition military sources acknowledge that this attack bears the signature of the Haqqani network, which continues to target and kill innocent Afghans and blatantly violate Afghan sovereignty from the safety of Pakistan, " U.S. Marine Gen.

WSJ: Taliban Insurgents Attack Afghan Hotel, Kill 18