. >> kathleen rice: i would call him an academic gun for hire. as. >> stewart: people just needed him to get a job done and he got it done. >> rice: and he was the man. >> stewart: nassau county district attorney kathleen rice filed criminal charges against eshaghoff and the students who hired him. >> rice: this was a huge fraud, from my perspective. this was lots of money changing hands. there were high stakes involved, and there was forgery, there was criminal impersonation. that's a fraud on many different levels, but most importantly, against the kids who play by the rules. >> stewart: during the course of your investigation, what did you discover about the process of taking the s.a.t. and the security associated with taking the s.a.t. test? >> rice: how incredibly easy it is to cheat the system. there is absolutely no security in place whatsoever to prevent criminal impersonation like we see here from happening. >> stewart: so if i went up to any of those kids and i say, "do you know what this guy did?" they'd all know? >> eshaghoff: every si