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Urban traffic systems vulnerable to hacking

Security experts say that a hacker can tap into traffic sensors to gain access to signals and change them at will

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Washington officials have began a study of the encryption of traffic sensors after a researcher said he tapped into the city's traffic system.

Washington

PICTURE this: A hacker walks the streets of Capitol Hill with a laptop and malicious intentions. He crouches to street level, tapping into the city's traffic sensors during rush hour. Suddenly, downtown traffic signals turn to a constellation of red. Within minutes, streets are