Excellus Blue Cross Blue Shield (Excellus) was hit with another proposed class action suit late last week (view related posts here and here).

The case, filed by a New York woman, accuses Excellus BlueCross BlueShield of failing to prevent a massive data breach that exposed the personal information of 10 million customers. This is the latest suit—the sixth—to be filed against Excellus in federal court over the cyber-attack that started in December 2013.

The intrusion compromised the names, birth dates, Social Security numbers, addresses and financial information of 10 million members, and occurred on the heels of other high profile data breaches of insurers, including Anthem, CareFirst and Premara