---
title: Mirae Asset Securities Groupware Hack Leaks Personal Data of 35,255 People
url: https://www.dataloco.com/en/mirae-asset-securities-groupware-hack-leaks-personal-data-of-35255-people
published: 2026-11-10T16:21:13+00:00
language: en
section: Security
source: https://www.dailysecu.com/news/articleView.html?idxno=209380
organizations: Mirae Asset Securities
publisher: Dataloco
---

# Mirae Asset Securities Groupware Hack Leaks Personal Data of 35,255 People

Mirae Asset Securities experienced a leak of personal information belonging to approximately 35,255 employees, including former staff and outsourced workers, following an external cyberattack on its internal groupware system.

The company announced through an official notice that the attack on the groupware system, known as mi-global, occurred on November 5. The leaked data primarily consists of names and employee identification numbers. For some individuals, the breach also included email addresses, mobile phone numbers, and encrypted passwords.

Following the discovery of the incident, Mirae Asset Securities blocked the network connection of the affected server to prevent further external access. The company has currently disabled external connections for the groupware and related mobile services while inspecting for additional vulnerabilities. This security review has been expanded to cover all internal systems accessible from the outside.

Details regarding the specific vulnerability used by the attacker, the extent of system access after the initial breach, the method of data extraction, and the identity of the attacker remain unconfirmed. It is also unclear if the breach extended to internal systems other than the groupware.

The company warned that the leaked information could be used for phishing or smishing attacks where attackers impersonate colleagues or the firm. Employees are advised not to trust requests even if they contain correct names and employee numbers, and are urged not to click suspicious links, open attachments, or provide authentication numbers.

Mirae Asset Securities is operating a temporary consultation window for affected individuals to verify their specific leaked information. The firm is providing guidance on remedy procedures, including claims for damages, statutory damages, and applications for personal information dispute mediation.

## This story in other languages

- [Italiano](https://www.dataloco.com/it/attacco-informatico-al-sistema-mi-global-di-mirae-asset-securities-causa-la-fuga-di-dati-di-oltre-35000-persone)
- [Indonesia](https://www.dataloco.com/id/sistem-grupware-mirae-asset-securities-diretas-data-pribadi-35255-orang-bocor)
- [ไทย](https://www.dataloco.com/th/35255)
- [Svenska](https://www.dataloco.com/sv/externa-cyberattack-mot-mi-global-led-till-lackage-av-personuppgifter-for-35-255-personer)
- [हिन्दी](https://www.dataloco.com/hi/mirae-asset-securities-ka-garapavayara-sasatama-ma-sathha-35255-lga-ka-vayakatagata-janakara-lka)
- [Norsk](https://www.dataloco.com/no/personopplysninger-for-over-35-000-ansatte-lekket-etter-hacking-av-mirae-asset-securities)
- [العربية](https://www.dataloco.com/ar/akhtrak-ntham-dakhly-lshrk-myryts-llaorak-almaly-yody-al-tsryb-byanat-aashrat-alalaf-mn-almothfyn)
- [Русский](https://www.dataloco.com/ru/vnutrenniaia-sistema-kompanii-podverglas-atake-cto-privelo-k-utecke-dannyx-35255-sotrudnikov)
- [עברית](https://www.dataloco.com/he/groupware-mirae-asset-securities-35000)
- [Português (Brasil)](https://www.dataloco.com/pt-br/ataque-cibernetico-ao-sistema-de-grupo-da-mirae-asset-securities-expoe-dados-de-35255-pessoas)