New York, NY, United States (AHN) – The number of hacked Citi credit card accounts rose to 360,083 from the 210,000 announced earlier, according to Citigroup.
The company released the revised number on Wednesday. Last week, Citigroup said the affected accounts from North America numbered about 210,000 out of its 23.5 million accounts in the continent.
California got the most number of breached accounts with 80,454 followed by Texas with 44,134, Illinois with 30,054, New York with 25,312 and Florida with 20,303.
Hackers were able to steal names, account numbers, phone numbers and email addresses just by adding account numbers at the end of the URL of the Citi credit card web portal. A script that changed the URL tens of thousands of times was used to enter the accounts of customers.
Nearly 218,000 replacement cards were issued to cover the affected accounts. Citigroup also has been monitoring high-risk accounts for illegal purchases.
The breach on credit card accounts was discovered on May 10 and Citigroup started notifying cardholders on June 3.
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