At the request of his national intelligence director, Bush ordered an NSA cyberattack on the cellular phones and computers that insurgents in Iraq were using to plan roadside bombings. The devices allowed the fighters to coordinate their strikes and, later, post videos of the attacks on the Internet to recruit followers. According to a former senior administration official who was present at an Oval Office meeting when the president authorized the attack, the operation helped U.S. forces to commandeer the Iraqi fighters'

communications system. With this capability, the Americans could deceive their adversaries with false information, including messages to lead unwitting insurgents into the fire of waiting U.S. soldiers.

Former officials with knowledge of the computer network attack, all of whom requested anonymity when discussing intelligence techniques, said that the operation helped turn the tide of the war. Even more than the thousands of additional ground troops that Bush ordered to Iraq as part of the 2007 "surge," they credit the cyberattacks with allowing military planners to track and kill some of the most influential insurgents. The cyber-intelligence augmented information coming in from unmanned aerial drones as well as an expanding network of human spies. A Pentagon spokesman declined to discuss the operation.

Bush's authorization of "information warfare," a broad term that encompasses computerized attacks, has been previously reported by National Journal and other publications. But the details of specific operations that specially trained digital warriors waged through cyberspace aren't widely known, nor has the turnaround in the Iraq ground war been directly attributed to the cyber campaign. The reason that cyber techniques weren't used earlier may have to do with the military's long-held fear that such warfare can quickly spiral out of control. Indeed, in the months before the U.S. invasion of Iraq in March 2003, military planners considered a computerized attack to disable the networks that controlled Iraq's banking system, but they backed off when they realized that those networks were global and connected to banks in France.

By early 2007, however, two senior officials with experience and faith in the power of cyber-warfare to discretely target an adversary stepped into top military and intelligence posts. Mike McConnell, a former director of the National Security Agency, took over as director of national intelligence in February of that year. And only weeks earlier, Army Gen. David Petraeus became the commander of all allied forces in Iraq. McConnell, who presented the request to Bush in the May 2007 Oval Office meeting, had established the first information warfare center at the NSA in the mid-1990s. Petraeus, a devotee of counterinsurgency doctrine, believed that cyberwar would play a crucial role in the strategy he had planned as part of the surge. In September 2007, the general told Congress, "This war is not only being fought on the ground in Iraq but also in cyberspace."