Kmart becomes latest retailer hit by data theft Sears Holdings announced late Friday that it detected a data breach at its Kmart stores. Check out this story on WUSA9.com: http://on.wusa9.com/1xAqsjm NEW YORK - Sears Holdings announced late Friday that it detected a data breach at its Kmart stores that started last month and that certain customers' credit and debit card accounts may have been hacked.