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Hackers have never had it so easy.Thanks to new wireless devices, they're now able to rip you off out of thin air. Something powerful is spreading over our cities and neighborhoods. It's invisible, but one computer security consultant sees it clearly. With a pocket P.C. and a $20 antenna, Brett Hiley dances around, counting wireless Internet access points. From a secluded park, he picks up nearly a hundred Internet connections, some from homes and businesses many miles away. "I'm sure we can pick up several businesses in those towers," said Hiley, a computer security consultant.
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