The investigation found a “known technical vulnerability” in the bank’s Account Online web-based service, Connecticut Attorney General George Jepsen said in a statement today announcing the settlement.
“This vulnerability was known to the company at the time of the breach and may have existed since 2008,” he said.
New York-based Citigroup will obtain a third-party data security audit, the state said. The investigation was conducted by Connecticut and California Attorney General Kamala Harris.
The bank will also pay $55,000.
Customer data that is “critical to commit identity theft” was not accessed, said Emily Collins, a spokeswoman for the bank.
“Citi has and will continue to comply with all applicable information security laws and customer notification requirements,” Collins said.
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