Stater Bros. Markets reported a physical data breach involving a skimmer device installed on a point-of-sale pin pad at a West Covina, California store. The device was active between March 5, 2015, and March 29, 2015, capturing payment card data including account numbers, expiration dates, verification codes, and debit PINs. The company discovered the incident on April 8, 2015, launched an investigation, and notified local law enforcement. Remediation included accelerating data protection plans and enhancing POS terminal security policies.