Who in their right mind would dare hack a construction sign with zombie warnings? Well, apparently some people in Austin—probably some pesky University of Texas students according to a local traffic controller:

Jones, who has one of only two keys to the locked access panels on the portable signs, said that the hacker broke into the panels on each sign and bypassed the passwords before leaving five different zombie messages and even changing one of the passwords. Jones said he had to wait until 8 a.m. to call the manufacturing company to figure out how to override the hacker's work.

OK OK, but here's the punchline:

He speculated that the hacker could be a computer genius from UT.

Yes, kids. You too can be a computer genius. [Statesman and No Fear of the Future]