He was minutes away from freedom before the digital trap snapped shut. Gholamreza Hosseini, a CIA informant, was arrested at a Tehran airport after a systemic failure in the CIA's covert communication network exposed him to Iranian intelligence. From "hidden" websites with obvious source code to sequential IP addresses that acted like a digital map for spy-catchers, this is the story of how small technical mistakes led to a decade in prison and the collapse of a multi-million dollar intelligence network.