South Korea financial sector hit by new cyberattacks on Daishin, Mirae Asset, and Bithumb
Brokerages and a major crypto exchange in South Korea disclosed cybersecurity incidents on Wednesday, marking another cluster of attacks on the country's financial sector roughly a month after an earlier wave. Daishin Securities said a breach exposed personal information for 38,490 customers, including names, email addresses, and mobile phone numbers, and reported notifying victims while cooperating with authorities. Mirae Asset Global Investments and Bithumb reported separate incidents but have not confirmed customer data exposure. Reporting ties rising concern about AI-driven hacking in Asia to prior research linking September attacks to a suspected China-based actor using an AI penetration testing tool called Artex; officials are still investigating root causes for the latest breaches, and the AI angle for these specific incidents remains unverified.
South Korea financial sector hit by new cyberattacks on Daishin, Mirae Asset, and Bithumb
South Korea’s financial institutions have been hit by another wave of cyberattacks, highlighting the growing risk of AI-driven hacking in Asia. Daishin reported a cyberattack that exposed the personal information of 38,490 customers, while Mirae Asset Global Investments and Bithumb reported separate incidents on Wednesday.
Key takeaway
Daishin confirmed a breach exposing personal data for 38,490 customers; Mirae Asset and Bithumb reported separate incidents without confirming whether customer information was affected.
What happened
According to TechCrunch citing local media, South Korean financial institutions including Daishin Securities, Mirae Asset Global Investments, and crypto exchange Bithumb were hit by another wave of cyberattacks on Wednesday, following a September wave that researchers linked to a suspected China-based hacker using an AI penetration testing tool called Artex.
Daishin reported that the cyberattack exposed personal information of 38,490 customers, including names, email addresses, and mobile phone numbers; the company has notified affected customers, is cooperating with authorities, and will compensate for losses as required by law, while Mirae and Bithumb reported separate cybersecurity incidents but have not confirmed customer data impact.
Evidence
Daishin reported exposure of personal data for 38,490 customers.
TechCrunch AI · attributed
Daishin reported exposure of personal data for 38,490 customers, while Mirae and Bithumb reported separate incidents but have not confirmed customer data impact.
Mirae Asset Global Investments and Bithumb reported separate incidents on Wednesday without confirmed customer data impact.
TechCrunch AI · attributed
Mirae Asset Global Investments and Bithumb reported separate incidents on Wednesday.
Officials are still investigating the root cause of the latest breaches.
TechCrunch AI · attributed
officials are still investigating the root cause of the latest breaches
September attacks were linked by researchers to a suspected China-based hacker using an AI penetration testing tool called Artex.
TechCrunch AI · attributed
The attacks follow a September wave linked by researchers to a suspected China-based hacker using an AI penetration testing tool called Artex.
Reporting highlights growing risk of AI-driven hacking in Asia but does not verify AI use in the latest incidents.
TechCrunch AI · attributed
The link to AI is based on a prior wave and a suspected tool, not on verified evidence for the new incidents.
Why it matters
Financial and crypto operators face escalating regional targeting beyond traditional banks, yet attribution and AI-enablement claims for this wave should wait on investigations rather than September-era tooling narratives alone.
Limits and uncertainties
Officials are still investigating the root cause of the latest breaches and have not established the identity or motive of the attackers in this wave.
Mirae and Bithumb have not confirmed customer data exposure; the excerpt does not provide technical details or independent confirmation of AI-driven hacking for these specific incidents.
The AI-assisted hacking framing in reporting draws on a prior September wave and the Artex tool, not verified evidence for the new incidents.
Practical implications
Brokerages and exchanges should treat customer PII notification, authority cooperation, and compensation obligations as live requirements given Daishin's confirmed exposure scale.
Defensive planning should separate confirmed breach facts from speculative AI attack vectors until investigators or independent researchers publish technical attribution for the latest wave.
What to watch
Whether Mirae Asset Global Investments and Bithumb confirm or rule out customer data exposure after their Wednesday incidents.
Investigation outcomes on root cause and any verified link between the latest breaches and AI penetration testing tooling such as Artex.
