A recently discovered cyberattack on health insurance provider Premera Blue Cross last year may have exposed the medical data and financial information of 11 million customers, the company revealed Tuesday, the latest security breach at a health industry organization.
Hackers gained unauthorized access to customers' personal information, including names, birthdates, Social Security numbers, and claims information during the May 2014 intrusion, said Premera, a health benefits provider in the Pacific Northwest. Other information exposed included bank account information, email addresses and telephone numbers, Premera said.
The breach was discovered January 29, just days before Anthem, the No. 2 health insurer in the US, revealed that it was the victim of what may be the largest ever data breach involving a US health insurer. Anthem said the attack on its servers
compromised the unencrypted personal information such as names, dates of birth, member IDs, and Social Security numbers for as many as 80 million current and former members and employees.