A hacking incident leaked personal information of customers using mutual insurance services of MG Community Credit Cooperatives Federation. The leaked data was confirmed to include financial information such as encrypted resident registration numbers, bank account numbers, contact details and balances.

The federation confirmed the leak of personal (credit) information of some customers and apologised in a notice to mutual insurance members on Oct. 13.

According to the federation, the leaked information includes customer numbers and names, encrypted resident registration numbers, bank account numbers, dates of birth, mobile phone numbers, home phone numbers, work phone numbers, home addresses, work addresses, email addresses and balances. The types of information leaked differ by customer.

The federation said it blocked the IP address used by the hacker and the IP address used for bypass access immediately after it became aware of the incident. It said it also carried out additional checks and fixes for vulnerabilities on its website.

It is notifying customers confirmed to have had personal information leaked individually by text message. It also enabled customers to check on its website whether their information was leaked and which items were exposed.

The federation said it will fully compensate customers if they suffer losses from the incident. Related inquiries and loss reports can be filed through the Mutual Insurance Support Center.

Jin-woo Lim (임진우), the federation's credit mutual insurance chief executive, said, "We will review the overall personal information protection system and management procedures and strengthen the security system to do our best to prevent similar incidents from recurring."