In the hours after the first US and Israeli attacks on Iran, with the world’s attention focused on the conflict, a group of amateur sleuths noticed a series of unusual messages on the airwaves.
Broadcast in Farsi, the short-wave radio signals were accompanied by seemingly random numbers.
They recognised them as spycraft that came into common use during the Cold War. Numbers stations, as they are known, would relay strings of numbers which could be decoded by an intended recipient with a short-wave radio.
The near-zero likelihood of the broadcasts being deciphered made numbers stations a feature used by all sides of the shadow intelligence battles of the time. No government has officially admitted or denied using them.
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