Excellus Blue Cross Blue Shield Hacked in 2013, Discovered in 2015
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Although the breach occurred in 2013, Excellus just discovered the issue on Aug. 5. Since then, Excellus has engaged with the Federal Bureau of Investigation as well as FireEye's Mandiant incident response division.
"We worked closely with Mandiant, one of the world's leading cyber-security firms, to conduct our investigation and to remediate the issues created by the attack on our IT systems," Excellus President and CEO Christopher Booth, said in a statement. "We are taking additional actions to strengthen and enhance the security of our IT systems moving forward."