Electronic surveillance

FBI let alleged pedo walk free rather than explain how they snared him

In a surprising and worrying move, the FBI has dropped its case against a man accused of downloading child sex abuse images, rather than reveal details about how they caught him.

Jay Michaud, a middle school teacher in Vancouver, Washington, was arrested in July last year after visiting the Playpen, a dark web meeting place tens of thousands of perverts used to swap mountains of vile underage porn.

Unbeknown to him at the time, the FBI were, for about a fortnight, running the site after taking over its servers, and managed to install a network investigative technique (NIT) on his computer to get his real public IP address and MAC address. The Playpen was hidden in the Tor anonymizing network, and the spyware was needed to unmask suspects – about 1,300 public IP addresses were collected by agents during the operation...