CareFirst BlueCross BlueShield says 1.1 million current and former members have been exposed. Names, birth dates, email addresses, and subscriber ID numbers were exposed. Data did not include Social Security numbers, medical claims, employment information, or credit card data. Comes two months after Premera Blue Cross disclosed a similar breach of 11 million records. Mandiant Mandiant has been hired to investigate the attack at Carefirst and is working with the company. Some researchers have implicated Chinese APT groups in attacks on healthcare organizations.”]
Source: https://www.darkreading.com/attacks-breaches/1-1-million-hit-in-another-bluecross-blueshield-breach