Arena: A lot of it was, "This is what we're seeing. ... We're getting pinged from locations in the old Soviet bloc, the Philippines."

O'Brien: They're on the front lines, dealing with the things that we're investigating. I'm seeing a lot of activity coming from overseas. That seems to be a major source of the phishing.

How big of an issue is cybercrime to the FBI?

Arena: Cybercrime is the No. 3 overall priority at the FBI, behind counterterrorism and counterintelligence.

What happened to organized crime?