As with all electronic devices, they will be hooked into the net eventually. We've already designed fighter jets that can be controlled by a pilots thoughts, it won't take long to reverse that in the other direction.
Think the NSA spies on you now? Just wait.
And that's just for starters. Watch the movie Limitless, and imagine what that kind of leap in intelligence would do in the hands of evil, predatory people.
It also start a chip arms race between the bad and good guys, with the people who can't afford to keep up caught like sheep in the middle.
