A U.S. government office in Quantico, Virginia, has direct, high-speed access to a major wireless carrier’s systems, exposing customers’ voice calls, data packets and physical movements to uncontrolled surveillance, according to a computer security consultant who says he worked for the carrier in late 2003.

“What I thought was alarming is how this carrier ended up essentially allowing a third party outside their organization to have unfettered access to their environment,” Babak Pasdar, now CEO of New York-based Bat Blue told Threat Level. “I wanted to put some access controls around it; they vehemently denied it. And when I wanted to put some logging around it, they denied that.”

Whistle-Blower: Feds Have a Backdoor Into Wireless Carrier — Congress Reacts | Threat Level from Wired.com