At a time when the Internet has been under relentless attack from hackers, retailers are rightly concerned about the security of their Web-based networks. But just as vulnerable -- if not more so -- are their in-store wireless LANs (local area networks), which are used to support their wireless terminals, scales, registers and other devices. "We've read that wireless networks are wide open and vulnerable to attack," said Jim Dekle, MIS director for ABC Fine Wine and Spirits, Orlando, Fla., ...

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