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A hacked road sign in Chicago in 2009, one of many over the years to be illicitly reprogrammed to warn about a non-existent zombie uprising. (Amy Guth / Flickr)
A hacked road sign in Chicago in 2009, one of many over the years to be illicitly reprogrammed to warn about a non-existent zombie uprising. (Amy Guth / Flickr)

It’s still really easy to hack and reprogram road signs

Easily accessed through default passwords that are never changed, road signs can be altered to state anything from video-game jokes to zombie warnings.
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