MG Community Credit Cooperatives and OK Savings Bank Hit by Hacks Amid Expanding Financial Sector Breaches

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Hacking damages in the financial sector are spreading once again. MG Community Credit Cooperatives reported that the personal information of some 400 customers has been leaked, while OK Savings Bank also reported that the personal information of about 180 customers may have been leaked.

Reporter Choi Seung-hun has the details.

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This is an apology posted on the website by the head of the National Credit Union Federation of Korea under the name of its CEO.

It acknowledged that customers' personal information was leaked and disclosed 12 categories of leaked data.

The leaked data includes names, phone numbers, addresses, encrypted resident registration numbers, account numbers, and account balances.

MG Community Credit Cooperatives stated that it has sent text messages to the affected customers and vowed to fully compensate for any damages incurred.

It was confirmed that hackers attacked a vulnerability in a webpage used by mutual-aid insurance customers—rather than the federation's main homepage—after 2:00 PM on October 10.

The National Credit Union Federation of Korea became aware of the leak on the afternoon of October 12, two days later.

The incident is estimated to involve a method similar to recent successive financial sector hacks that used external business-use pages as hacking pathways.

However, the IP address used in this latest hack is reportedly different from the 28 addresses identified as having been used in previous hacking attacks.

As MG Community Credit Cooperatives temporarily suspended its insurance app and web services to prevent further damage, some customers who did not receive prior notice expressed anxiety.

[Seo Young-min / MG Community Credit Cooperatives Customer : Because I can't see anything right now, and I have three insurance policies here, I can't check whether my money is safe or what's going on.]

An attempt to attack a loan application webpage was also detected at OK Savings Bank on October 12.

The bank blocked its information inquiry system and reported to the Financial Supervisory Service that personal information of 183 customers may have been leaked.

The bank stated that it views the incident as using a method similar to recent financial sector hacks and is investigating whether actual information leakage occurred alongside an external security firm.

(Video by Jeon Min-gyu, Graphics by Park Cheon-ung)
※ Please note: This article was translated by AI and may contain errors.