KGB spy from the Soviet Union
From 2015, Steve Kroft’s report on Jack Barsky, a KGB spy from the Soviet Union who lived for decades in the United States without being detected. From 2001, Lesley Stahl’s report on Robert Hanssen, an FBI agent who was convicted of spying for Russia. And from 2010, Scott Pelley’s report on a Defense Department employee caught on tape selling secrets to a Chinese spy.
Credit to : 60 Minutes