This post suggest that may very well have happened.

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The technology allows users to invade communications networks, see what enemy sensors see and even take over as systems administrator so sensors can be manipulated into positions so that approaching aircraft can’t be seen, they say. The process involves locating enemy emitters with great precision and then directing data streams into them that can include false targets and misleading messages algorithms that allow a number of activities including control.

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Meanwhile the Russians who supplied the air defense system to Syria and sold a similar one to Iran are furiously trying to figure out what happened.