Seoul:Mirae Asset Securities Co. has announced that it was the victim of cyberattacks leading to the exposure of sensitive information belonging to thousands of its customers and employees.

According to Yonhap News Agency, the South Korean brokerage disclosed that unauthorized access occurred on Wednesday and Thursday, specifically targeting its mobile web phone authentication login service and internal system. This breach resulted in the leakage of account numbers of approximately 3,800 customers and personal details of over 35,000 current and former employees, including contractors.

The compromised data encompasses non-customer and corporate information such as names, employee ID numbers, email addresses, mobile phone numbers, and passwords. Mirae Asset acted promptly by blocking the affected access routes upon identifying suspicious activities from external IP addresses and subsequently activated its emergency response system.

The company has reported the incident to the Financial Services Commission, the Financial Supervisory Service, and the Personal Information Protection Commission to address the breach's implications.