INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Halis Reports 2,760,000 Personal Information Leaked

| 2026-10-19 06:57 CRITICAL LOW DATA BREACH
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Executive Summary
AI-generated
On October 19, 2026, Halis, a Korean financial institution, announced a data breach incident involving approximately 2,760,000 customer personal information cases. The company reported that an unauthorized access to its cloud service occurred between September 3rd and October 7th of this year, when hackers accessed the service using an abnormal path for cryptocurrency mining. Halis has apologized for the incident and taken measures to change customer passwords, thoroughly inspecting its security systems and suspending membership services that use the affected cloud. The Korea Internet & Security Agency (KISA) has been notified, and an internal investigation is underway to determine the incident's details; KISA was also informed about this breach in 2009.
Technical Mitigations AI-generated
• Reset credentials and API keys that may have been exposed, and review access logs for the affected accounts or integrations.
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
Target & Sectors
Global Scope financefinance
Incident Timeline
‎February 11, 2020
Threat actors leaked approximately 2,760,000 personal information cases accumulated from 2009 to February 11, 2020.
industry Finance
General Document Context
general_metric 2,760,000 information cases
Halis reported the incident to the Korea Internet & Security Agency (KISA) and estimated the scope of the breach to be approximately 2,760,000 cases, accumulated from 2009 to February 11, 2020.
organisation the Korea Internet & Security Agency
Halis reported the incident to the Korea Internet & Security Agency (KISA) and estimated the scope of the breach to be approximately 2,760,000 cases, accumulated from 2009 to February 11, 2020.
organisation KISA
Halis reported the incident to the Korea Internet & Security Agency (KISA) and estimated the scope of the breach to be approximately 2,760,000 cases, accumulated from 2009 to February 11, 2020.
‎September 2020
KG Group acquired a 93.8% stake in Halis for 145,000,000,000 won in September 2020.
organisation KG Group
KG Group acquired a 93.8% stake in Halis in September 2020 for 145,000,000,000 won.
general_metric 93.8 %
KG Group acquired a 93.8% stake in Halis in September 2020 for 145,000,000,000 won.
general_metric 145,000,000,000 won
KG Group acquired a 93.8% stake in Halis in September 2020 for 145,000,000,000 won.
organisation KG Halis & Co.
The operating company subsequently changed its name to KG Halis & Co., and then to KG Bank in 2024.
organisation KG Bank
The operating company subsequently changed its name to KG Halis & Co., and then to KG Bank in 2024.
Intelligence Sources
Chosun Economy 2026-10-19