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Terrorism & Security

Did Iran just down a US drone by 'spoofing'? (+video)

Iran claims it captured a US drone in its airspace, which the US denies. If true, Iran may have brought the drone down by jamming signals and reconfiguring its GPS coordinates.

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A spokesman for the US Naval Forces Central Command in Bahrain told Reuters that "The U.S. Navy has fully accounted for all unmanned air vehicles (UAV) operating in the Middle East region. Our operations in the Gulf are confined to internationally recognized water and air space."

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Latin America Editor

Whitney Eulich is the Monitor's Latin America editor, overseeing regional coverage for and the weekly magazine. She also curates the Latin America Monitor Blog.

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The commander added, "We have no record that we have lost any ScanEagles recently."

Though the US denies Iran’s downing of a drone today, last December “Iran gained possession of a US stealth drone spying on a nuclear site. An Iranian engineer told the Monitor that Iran had hijacked the drone by manipulating its global positioning system coordinates, making it land in Iran,” according to The Monitor’s Scott Peterson. The NY Times notes that the US contends the RQ-170 drone crashed in Iranian territory last year.

Mr. Peterson, who broke the story on Iran’s success bringing down last year’s Stealth drone, says that if Iran’s claims today are true, it likely used the same electronic tactics as last time. In December 2011, Peterson described the technique, known as "spoofing":

Using knowledge gleaned from previous downed American drones and a technique proudly claimed by Iranian commanders in September, the Iranian specialists then reconfigured the drone's GPS coordinates to make it land in Iran at what the drone thought was its actual home base in Afghanistan.

"The GPS navigation is the weakest point," the Iranian engineer told the Monitor, giving the most detailed description yet published of Iran's "electronic ambush" of the highly classified US drone. "By putting noise [jamming] on the communications, you force the bird into autopilot. This is where the bird loses its brain."

The “spoofing” technique that the Iranians used – which took into account precise landing altitudes, as well as latitudinal and longitudinal data – made the drone “land on its own where we wanted it to, without having to crack the remote-control signals and communications” from the US control center, says the engineer.

Iran has exaggerated its capabilities in the past, Peterson notes. "But experts say that there is also a history of the US underestimating Iran’s electronic warfare and cyber expertise,” he wrote in a separate Monitor story after Iran claimed to have unlocked data from the drone last year.


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