Marketing company Epsilon says an outside intrusion had hacked into some of its customer files. Epsilon sends more than 40 billion e-mails annually and also runs loyalty programs for Citi and Chase credit card users. Citi, Chase, U.S. Bank, Capital One, Verizon, Walgreens, Kroger, Marriott International, Ritz-Carlton Rewards, Brookstone, New York & Co., TiVo, HSN and L.L. Bean are among the confirmed entities to be hit.”]
Source: https://www.bankinfosecurity.com/epsilon-biggest-breach-ever-a-3502