A popular software that retailers use to control debit-card
transactions may inadvertently store sensitive customer information,
including PIN codes, says Visa. Two versions of
cash-register software made by Fujitsu Transaction Solutions are under
scrutiny, according to a warning Visa issued to the companies that
process card transactions for some of the nation's largest retailers. A
Visa representative confirmed that the warning was sent.
Some
of Fujitsu's retail customers include Best Buy, Staples and OfficeMax,
but it is not known which companies use the software Visa claims is
flawed. Visa's warning, which was first reported by The Wall Street
Journal on Friday, has raised eyebrows in the financial and retail
sectors. The software was flagged at a time when thousands of
debit-card holders across the country have reported unauthorized
withdrawals from their accounts. Bank of America, Washington Mutual and Citibank are among
the financial institutions that have replaced more than 200,000 debit
cards in the past two months and have told customers that thieves
obtained vital debit-card information as a result of a security breach
at a large merchant.
One commonality among the fraud victims, according to law enforcement and banking officials, is that most had shopped at one of Fujitsu's clients: OfficeMax.
The office-supply retailer has said that it has found no indication
that it suffered an illegal intrusion. Fujitsu, which did not return
repeated phone calls from CNET News.com on Friday, denied that its
software has had anything to do with any alleged security breach. A
representative for the company told the Journal that customer data, such as PIN codes, could not be stored using just its software. Other software tools would have to be added.
Major credit-card companies have banned the storing of customer data
and can fine merchants who do store such data. The fear is that
customer information may be a sitting duck for hackers should it be
left in a company's computer system. What may be more worrisome for consumers is that it's not
uncommon for merchants to accidentally stockpile their customers' data,
says Branden Williams, a principal consultant at
computer-infrastructure firm VeriSign.
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