He said, that some hackers already take over a user's computer and encrypt its hard drive, locking them out. Want everything back to normal – make a payment to the hackers. By hacking more and more e-mail accounts, cyber-criminals expose the online life of others.
Schmidt believes the problems could go further as other technologies become cheaper. "Terrorists and criminals could use drones to carry IEDs [improved explosive devices] – that could result in conflict between civil and military drones," he suggested, though adding, that “the future will be much more disruptive to terrorists than everyone else”.