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Mirae Asset Securities Data Breach Exposes Info of 39,000 Customers and Employees

Mirae Asset Securities Data Breach Exposes Info of 39,000 Customers and Employees

First seen 7 Nov 2026, 21:46 UTC • •
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ThreatCluster AI
ThreatCluster •November 7, 2026 at 21:47 UTC
  • •39,000 individuals affected, including 3,800 customers.
  • •Unauthorized access targeted mobile web authentication and internal systems.
  • •Mirae Asset activated emergency response and reported the breach to regulators.

Mirae Asset Securities reported a data breach affecting approximately 39,000 individuals, including 3,800 customers and over 35,000 employees and contractors. The unauthorized access occurred on November 2 and 3, targeting the company's mobile web phone authentication login service and internal systems. Leaked data includes account numbers, names, employee ID numbers, email addresses, mobile phone numbers, and passwords. The firm has since blocked the affected access routes and activated its emergency response system. The incident has been reported to regulatory bodies including the Financial Services Commission and the Financial Supervisory Service. This breach follows similar incidents involving Mirae Asset's sister companies, highlighting a troubling trend in the financial sector. Over 470,000 personal data records have been leaked from 37 companies in the sector in recent weeks, with an estimated 1 billion won stolen.

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Updated 9h ago How this analysis works

Timeline

2026-11-02
Unauthorized access detected
Mirae Asset Securities identified suspicious activity targeting its systems, leading to a data breach.
Koreatimes
2026-11-03
Data breach confirmed
Mirae Asset confirmed the breach affecting customer and employee data, including account numbers and personal information.
Koreajoongangdaily
2026-11-07
Incident reported to regulators
Mirae Asset reported the breach to the Financial Services Commission and other regulatory bodies.
Koreatimes

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Extracted Entities (6)

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Common questions

What specific data was leaked?
The breach exposed account numbers, names, employee ID numbers, email addresses, mobile phone numbers, and passwords.
What actions has Mirae Asset taken?
Mirae Asset blocked affected access routes and activated its emergency response system, reporting the incident to regulators.
How many individuals were affected?
Approximately 39,000 individuals were affected, including 3,800 customers and over 35,000 employees and contractors.