Insurgents² in Iraq have hacked³ into live video feeds from unmanned American drone aircraft, US media reports say.

美国某媒体报道称，伊拉克叛乱分子黑入美国无人侦察机反馈回来的实时录像系统。

Drones can be remotely controlled from thousands of miles away

Shia fighters are said to have used off-the-shelf software programs such as SkyGrabber to capture the footage.

The hacking⁴ was possible because the remotely flown planes have an unprotected communications link.

Obtaining such video feeds could provide insurgents with information about sites the military might be planning to target.

The Associated Press news agency quotes a US Department of Defense⁵ official as saying the military has also found evidence of at least one instance where insurgents in Afghanistan monitored drone video.

The breach违反，缺口 of the Pentagon surveillance system监视系统's security in Iraq is said to have come to light when footage shot by a Predator⁷ drone was found on the laptop of an apprehended⁸逮捕 insurgent¹.

A senior Pentagon official is quoted by the Wall Street Journal as saying that although militants⁹ were able to view the video, there was no evidence that they were able to jam electronic signals from the aircraft or take control of them.

The unnamed official said the US defence department had addressed the issue by working to encrypt加密 all video feeds provided by drones in Iraq, Afghanistan and Pakistan.

Predator drones can fly for several hours, remotely controlled by pilots thousands of miles away. The aircraft can carry out surveillance and attack targets with on-board missiles.

Responding to the reports, a Pentagon spokesman said: "The Department of Defense constantly evaluates and seeks to improve the performance and security of our various systems and platforms.

"As we identify shortfalls缺少，差额, we correct them as part of a continuous process of seeking to improve capabilities¹⁰ and security. As a matter of policy, we don't comment on specific vulnerabilities or intelligence issues."