Several U.S. states are investigating a massive cyber attack on No. 2 U.S. health insurer Anthem Inc that a person familiar with the matter said is being examined for possible ties to China.
Anthem disclosed the attack late Wednesday, saying unknown hackers had penetrated a database with some 80 million records. The insurer said it suspected they had stolen information belonging to tens of millions of current and former customers as well as employees.
Attorneys general of Connecticut, Illinois, Massachusetts, Arkansas and North Carolina are looking into the breach, according to representatives of their offices and internal documents. California's Department of Insurance said it will review Anthem's response to the data attack.
"We hope and expect to work in close coordination with other attorneys general," said Jaclyn Falkowski, a spokeswoman for Jepsen.
Late on Wednesday, the FBI said it was looking into the matter but did not discuss suspects.
On Friday, Anthem officials are scheduled to brief the House Energy and Commerce Committee on the breach.
President Barack Obama's cyber security adviser, Michael Daniel, speaking at a seminar in Washington, called the data breach "quite concerning" and warned consumers to change their passwords and monitor their credit scores.
A representative for New York Attorney General Eric Schneiderman declined to say whether he planned to work with Connecticut but noted his office had contacted Anthem to discuss protecting its customers in the wake of the data breach.
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