conspiracies. one fbi counter cyber case led to over 102 coordinated arrests around the world. a massive strike against black shade, a new hacker technology. >> in the case of black shades they specifically designed and marketed this tool so it could be installed without the owner knowing it. >> reporter: hackers used the tool to i attack or hijack computers of over 700,000 people worldwide which the fbi tracked. >> they bragged about it. they had a customer support section that if you had trouble getting it onto your victim they would help you with it. >> reporter: some of those individuals were prosecuted in their home countries. others extradited to the united states. do you think those suspects ever expected that in logging on and gauging this behavior they would end up uh in a u.s. court? >> no. i think they thought they were safe behind the borders of oh jurisdictions that traditionally may not have cooperated with us.