Skip to content
Mirae Asset Securities
Seoul, South Korea6 sources
Confirmed:Confirmed by the organisation, a regulator or a securities filing. First reported 7 Nov 2026.
Mirae Asset Securities hack exposes 39,000 customers and staff
Mirae Asset Securities said unauthorized external access on 4 and 5 November targeted its mobile-web phone-authentication login service and internal system, leaking about 3,800 customer account numbers and data on 35,255 current, former and contract staff. The company blocked the access routes and reported the incident to the FSC, FSS and PIPC.
- Type
- Cyberattack
- Sector
- Finance
- Records
- 39.1K records confirmed
- First reported
- 7 Nov 2026
- Latest source
- 8 Nov 2026
What to do
- Follow updates from the organisation itself rather than social media.
- If you have an account, change that password, and anywhere you reused it.
- Turn on two-factor authentication, ideally an authenticator app or passkey, not SMS.
- Expect phishing that uses your real details. Do not click links in messages about this incident; go to the company's site directly.
- If they are a supplier, ask for an incident summary and the indicators of compromise.
- Patch internet-facing systems first, especially VPNs, firewalls and file transfer software.
Not sure? Ask an assistant with the sources attached, or have a coding agent check your systems.
Check your systems for Mirae Asset Securities
Sources
6- bfsi.economictimes.indiatimes.com8 Nov 2026bfsi.economictimes.indiatimes.com/articles/personal-info-of-39000-persons-leaked-from-mirae-asset-securities/135655117
- konbriefing.com8 Nov 2026konbriefing.com/en-topics/cyber-attacks.html
- en.yna.co.kr7 Nov 2026en.yna.co.kr/view/AEN20261107000400315?section=economy-finance%2Feconomy
- tech-insider.org7 Nov 2026tech-insider.org/mirae-asset-securities-data-breach-35255-staff-3800-customers-2026
- english.mathrubhumi.com7 Nov 2026english.mathrubhumi.com/technology/personal-data-of-39-000-customers-employees-leaked-from-mirae-asset-securities-affyyoql
- en.yna.co.kr7 Nov 2026en.yna.co.kr/view/AEN20261107000400315
Confidence 90% that this is real and correctly placed. Locations are city centroids at best. Spotted an error? Report a correction.