By May 1, Best Buy, giant electronics retailer,had taken all its mobile cash registers off line.
Best Buy treated it as a confidential issue and refused to speak up what actually went wrong for avoilding obligation. "We are investigating" said spokesperson Donna Beadle, adding that the mobile registers handled only "a very small percentage of our transactions."
802.11 has obviously been known with its systems that contained certain vulnerabilities and chances to create security flaws for hackers and crackers. Some might say it's mostly a matter of human error because most of the wireless users do not concern the features of WEP, Wireless Equivalent Privacy, and simply just ignore it and leave it there. By improving the technology of 802.11, WEP encryption has been imporved from 64 bits to 128 bits within its passphrase, alphanumberic, hexademical.
William A. Arbaugh, computer science professor at the University of Maryland at College Park, said even the current 802.11 security mechanisms were completely broken. "Thus, the retailers shouldn't have been using the cash registers (even if WEP were available) without additional protection, presuming they could have added such protection. If they couldn't add additional protection, then they should have turned them off."
"The same guy who is picking up one or two credit-card numbers across a wireless link could also be sniffing passwords, and if he gets into your server: End game," Burk Murray said, vice president of marketing at Digi International. "Because people are not securing their sessions, the servers that are collecting ALL of these credit cards numbers also are vulnerable. So you have to make sure your sessions are secure, and then beyond that, you have to make sure your servers are securely managed, too."
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