according to the indictment, belan didn't start working with russian intelligence until after the u.sasked russia for help in arresting him for identity theft and other cyber crimes. >> carlin: this was a period we were looking for cooperation from the russians. not only did they not help, they signed him up as an intelligence asset after we asked for help. >> stahl: so you identify him for them as a brilliant hacker, and then they sign him up to work for them, the way they did with bogachev? >> carlin: yeah, not what you were looking for with cooperation, right? >> stahl: and then, were you able to see that he was working for intelligence? trying to gather information for the state? >> carlin: and that's the incredible detail in this indictment. this is the first case where we're able to show he's getting direct requests from russian intelligence officers, and they are providing him secret information that he can use to evade detection and arrest. >> stahl: belan then proceeded to commit one of the most far- reaching hacks ever, from 2014 to 2016, into yahoo, one of the world's busie