The country's largest theft of |personal financial data from KB |
The case provoked fury when revealed by prosecutors last month, with thousands flooding the firms' branches for days to cancel credit cards or get new ones.
The three credit card companies will be banned from issuing new |credit cards for three months until
"These firms neglected their duties to prevent the leak of customer information and to comply with internal controls," the FSC said. Operations involving existing cardholders would be unaffected, it said, adding each of the three firms would also be fined
The data was stolen by an employee from personal credit ratings firm
The stolen data included names, social security numbers, phone numbers, e-mail addresses, home addresses, credit card numbers and even personal credit ratings.
Millions of affected customers have since cancelled cards or applied for new ones.
Credit card usage is particularly high in
The three-month ban on accepting new customers is the heaviest state penalty in the South's competitive credit card market, where customers often switch cards to get more benefits or rewards.
Many major South Korean companies have seen customers' data leaked in recent years, either by hacking attacks or their own employees.
An employee of
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