Citibank discovered the breach during routine monitoring of its online account system and says it impacts about 1 percent of its bank card holders.
1010 WINS’ Carol D’Auria reports: Citibank Customers Say They’re Not Worried About Security Breach
The hackers were able to gain access to Citi’s Account Online service to view customer names, their account numbers and contact information including email addresses.
They weren’t able to gain access to social security numbers, birth dates, card expiry dates or card security codes.
Sean Kevelighan, a spokesman for Citi’s North America Consumer Banking division, said in an emailed statement that Citi is contacting customers who were affected and is putting in procedures to prevent the security breach happening again.
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