Yesterday, Excellus Blue Cross Blue Shield, located in Rochester, NY, announced that it will notify up to 10 million members that it was the victim of a cyber-attack dating back to December of 2013 that exposed their members’ names, addresses, and Social Security numbers, telephone numbers, member identification numbers, financial account information and claims information.

The breach was detected on August 5th. The insurer is notifying the affected individuals and will offer identity theft protection services.

This breach is in the wake of the Anthem breach that affected 80 million individuals. Many have predicted that health insurers would be targets of sophisticated hackers and these incidents are proving those predictions to be correct.