Key facts
- Daishin Securities reported a data breach affecting 38,490 customers.
- Personal information exposed included names, email addresses, and mobile phone numbers.
- Mirae Asset Global Investments and Bithumb also reported cybersecurity incidents.
- South Korea plans security checks on dozens of private sector IT systems.
South Korean financial institutions are facing a fresh wave of cyberattacks, with Daishin Securities, Mirae Asset Global Investments, and crypto exchange Bithumb reporting incidents. Daishin Securities disclosed that the personal information of 38,490 customers was exposed, including names, email addresses, and phone numbers. The company is cooperating with authorities and will compensate affected individuals. Mirae Asset and Bithumb also reported separate cybersecurity incidents on Wednesday, though customer data compromise has not been confirmed. These attacks follow a series of breaches last month, which security researchers linked to a suspected China-based hacker using an AI penetration testing tool. South Korea's financial regulator has urged for enhanced cybersecurity measures and plans to conduct security checks on numerous private sector IT systems.