If You're On a Phone in DC, Someone Could Be Listening

A Nevada-based security technology company says it has discovered proof of as many as 15 cellphone interception devices secretly operating in Washington D.C.

The interceptors are capable of identifying the movements of people, recording audio from mobile phones, listening to calls and reading email.

The company, ESD America  markets a Cryptophone designed to block attempts to hack the phone and alert its user to attempts to hack into it.

ESD employees spent several days surveying Washington, D.C., last week. The company's president, Les Goldsmith, told CNBC that the company discovered that someone was operating cellphone interception devices at some of the most sensitive locations in the nation's capital, including near the Capitol building, the White House, Treasury and in McLean, Virginia, not far from CIA headquarters.