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Traffic lights all across the United States are dangerously easy to hack.
Anyone with a radio hooked up to a laptop can wreak havoc by remotely changing lights at will -- or by shutting them all down. That's according to findings by computer researchers at the University of Michigan.
"There's an assumption that these devices are secure. We all just trust them so much," said Branden Ghena, a computer science PhD student at the university and the lead researcher on the study. "This is critical infrastructure. We were shocked that was going on."
http://money.cnn.com/2014/08/21/tech...ack/index.html