South Korea’s financial sector has been hit by another series of cyber incidents, underscoring the increasing risk of AI-assisted hacking across Asia. The most recent events involve brokerage Daishin Securities, asset manager Mirae Asset Global Investments, and cryptocurrency exchange Bithumb.
Scope and immediate impact
Local reports say that Daishin Securities disclosed a breach that exposed personal information for 38,490 customers, including names, email addresses and mobile phone numbers. Daishin has notified affected customers, is cooperating with authorities in the investigation, and says it will compensate for any losses as required by law.
Mirae Asset Global Investments and Bithumb separately reported cybersecurity incidents on Wednesday, according to local media, but neither firm has confirmed that customer data was stolen.
Links to prior attacks and AI concerns
The latest incidents come roughly a month after a wave of cyberattacks in September that targeted South Korean financial institutions. Security researchers linked that earlier wave to a suspected China-based hacker who used an AI penetration-testing tool called Artex. Officials are still investigating the root cause of the most recent breaches and have not established definitive connections between the incidents.
Regulatory response and regional context
South Korea’s Financial Services Commission (FSC) has called for stronger cybersecurity measures following the string of attacks on financial firms and government agencies. Authorities said they will conduct security checks on dozens of private-sector IT systems.
The region has seen related activity: Japan reported a cybersecurity incident involving GMO Internet recently after its own series of attacks on financial institutions. Investigators say the wider wave of attacks in Asia highlights growing cybersecurity challenges, in part stemming from years of weak protections, but have not confirmed links between the different cases.
Ongoing investigations
The FSC, Daishin Securities, Bithumb and Mirae Asset Global Investments did not immediately respond to requests for comment. Investigations are ongoing, and regulators and affected companies say they will provide further information as it becomes available. The incidents have prompted renewed focus on strengthening defenses against evolving threats, including those leveraging AI.
