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New Cyberattacks Hit Financial Companies in South Korea

Daishin Securities, Mirae Asset, and Bithumb were hit by cyberattacks, with Daishin stating that the personal data of 38,490 customers was exposed, amid calls to strengthen security.

28 Oct 2026, 18:50 GMT
New Cyberattacks Hit Financial Companies in South Korea

Brokerage firms Daishin Securities and Mirae Asset Global Investments, along with cryptocurrency exchange Bithumb, announced that they were hit by cyber incidents, according to TechCrunch.

Daishin stated that the personal data of 38,490 customers was exposed.

The incidents come about a month after a previous wave that researchers linked to a hacker suspected to be based in China who used an AI penetration testing tool.

South Korea's financial regulator called for strengthening cybersecurity, and the country plans to conduct security checks on dozens of tech systems in the private sector.

What do these terms mean?

Penetration testing: An authorized attempt to breach a computer system to discover its vulnerabilities before a real attacker can exploit them.

Cybersecurity: The set of procedures and technologies that protect networks, data, and devices from breach, manipulation, or disruption.

Personal data: Any information that can be linked to a specific person, such as name, phone number, email address, and account history.

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