Anthem didn't specify how many consumer records may have been breached, but it did say all of the company's business units are affected. The figures from Anthem's Web site offer a glimpse at just how big this breach could be: "With nearly 69 million people served by its affiliated companies including more than 37 million enrolled in its family of health plans, Anthem is one of the nation's leading health benefits companies."
The company said it is conducting an extensive IT forensic investigation to determine what members are impacted.
Continued : http://krebsonsecurity.com/2015/02/data-breach-at-health-insurer-anthem-could-impact-millions/
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Breach of Health Insurer Exposes Sensitive Data of Millions of Patients
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Anthem, America's second biggest health insurer, HACKED: Millions hit by breach

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