Book retailer Barnes & Noble this morning revealed that 63 of its stores have been victims of PIN pad tampering, following an internal investigation of "every PIN pad in every store" (just under 700 locations). B&N calls the tampering, "a sophisticated criminal effort to steal credit card information, debit card information, and debit card PIN numbers," and warns customers who may have swiped their cards at affected locations to alter debit card PINs as a precaution, as well as to keep an eye on credit card statements for false charges. B&N specifically
