Citigroup Bank the latest organisation to fall foul of hackers in data breach incident

Citigroup bank has confirmed hackers accessed bank card customers' account information in a data breach incident.

Citigroup bank has confirmed hackers accessed bank card customers' account information in a data breach incident.

The company said hackers accessed the details of 1% of customers at Citi Account Online in May, according to the Wall Street Journal.

The names of customers, account numbers and contact information, including e-mail addresses, were viewed. But other information - such as birth dates, social security numbers, card expiry dates and card security codes - were not compromised, Citigroup said.

Citigroup has tightened security and stepped up fraud-detection efforts in the wake of the attack. Citigroup has not disclosed whether customers had reported issues with their accounts, according to other US reports.

Citigroup joins a growing list of high-profile companies to report security breaches in recent weeks, with other incidents involving Sony, Nintendo, Google's GMail and Lockheed Martin.

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