FBI says Russian spies got close to Cabinet - Washington Times

Some interesting tid bits about the Russion spy ring break up last year:

[snip]-- a key break in the case developed in the mid-2000s after the FBI was able to decipher coded electronic communications between Moscow and the deep-cover spies. The communications were used to unravel the network, ending the FBI probe that began more than a decade ago.
Breaking the electronic codes used by the “illegals,” as the Moscow spies are called, was a milestone in the case that allowed FBI agents to pose as the spies’ handlers and identify the spies.
“Ultimately, at the end of the case, we were able to become the Russians,” Mr. Figliuzzi said. “The point where we decrypted the communications allows us to basically own the network.”

Full story at the Washington Times: FBI says Russian spies got close to Cabinet - Washington Times