# Daishin cyberattack exposes 38,490 customers' data as two other financial firms disclose incidents

_Published Wednesday, October 28, 2026 at 12:22 PM EDT · Security · Latest · Tier 2 — Notable_

![Daishin cyberattack exposes 38,490 customers' data as two other financial firms disclose incidents — Primary](https://techcrunch.com/wp-content/uploads/2023/05/south-korea-money-growth.jpg?resize=1200,675)

Daishin Securities exposed personal information belonging to 38,490 customers in a cyberattack, TechCrunch reported, including names, email addresses and mobile phone numbers.

Daishin has notified affected customers and is cooperating with authorities. Mirae Asset Global Investments and Bithumb disclosed separate incidents on Wednesday; neither has confirmed customer data theft. The latest attacks' root cause remains under investigation.

South Korea's financial regulator has called for stronger cybersecurity measures, and the country plans security checks on dozens of private-sector IT systems.

## Sources

- [TechCrunch](https://techcrunch.com/2026/10/28/south-koreas-financial-industry-hit-by-fresh-wave-of-cyberattacks/)

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Canonical: https://techandbusiness.org/newswire/eiuMzRcrHY1_gDae2eX-Nl
Published: 2026-10-28T16:22:32.601Z
Story chronology: 2026-10-28T15:41:18.000Z
Retrieved: 2026-10-28T18:56:00.683Z
Publisher: Tech & Business (techandbusiness.org)