Michaels Stores breach bigger than first reported

Brian Krebs reports that a breach involving Michaels Stores is not just a Chicago-area breach but is affecting stores nationwide:

Earlier this month, arts & crafts chain Michaels Stores disclosed that crooks had tampered with some point-of-sale devices at store registers in the Chicago area in a scheme to steal credit and debit card numbers and associated PINs. But new information on the investigation shows that many Michaels stores across the country have discovered compromised payment terminals.

Investigators close to the case, but who asked to remain anonymous because they did not have permission to speak publicly, said that at least 70 compromised POS terminals have been discovered so far in Michaels stores from Washington D.C. to the West Coast.