INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Naver Exposes Eight Hundred Forty-four Customers' and Seventeen Hundred Employees

| 2026-10-29 08:25 HIGH LOW DATA BREACH
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Executive Summary
AI-generated
A data breach occurred on October 27, 2026, when an external individual accessed Bithum's internal mobile groupware system, exposing the personal information of approximately 844 customers and 715 employees. The leaked information includes name, phone number, email address, resident registration number, driver's license number, account number, and a copy of the ID card. The breach is believed to have been caused by an employee using the company's internal mobile groupware system for work purposes. Bithum has apologized and plans to provide individual guidance to affected customers, while also investigating whether customer assets or savings were stolen in the incident.
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
KR
Incident Timeline
‎2026/10/29
Naver, a South Korean web portal and search engine, has issued a statement regarding a data breach involving approximately Eight Hundred Forty-four customers' personal information.
organisation Naver
Naver CEO Lee Jae-won has apologized, stating that the company will make a "deep apology".. South Korea's Virtual Asset Trading Platform Bithum Confirms Intra-Company System Hacking
organisation Yonhap News
Yonhap News reports that Naver, a South Korean web portal and search engine, has issued a statement regarding a data breach.
organisation Stream
South Korean virtual asset trading platform Stream has acknowledged and investigated unusual access incidents at some of its customers' accounts this month, with no asset losses reported.
organisation Dowon Office'
The breached system is Dowon's groupware solution 'Dowon Office'.
organisation KISA
The victim has informed the financial authorities and KISA (Korea Internet & Security Agency), Personal Information Protection Commission that an employee's information was leaked after the hacking was discovered on the same day.
organisation Korea Internet & Security Agency
The victim has informed the financial authorities and KISA (Korea Internet & Security Agency), Personal Information Protection Commission that an employee's information was leaked after the hacking was discovered on the same day.
organisation Personal Information Protection Commission
The victim has informed the financial authorities and KISA (Korea Internet & Security Agency), Personal Information Protection Commission that an employee's information was leaked after the hacking was discovered on the same day.
organisation CoinMarket
CoinMarket data shows that the exchange suffered 100,000,000 won in losses due to the hacking incident that occurred this month.
victims 5600 customers
Bithum stated that the scope of the hacking incident is 6444 customers, out of which 5600 customers' personal information was not exposed due to encryption.
victims 844 customers
The exposed customers are 844.
Tactical Metrics
Metrics
victims
5,600
Customers
Bithum stated that the scope of the hacking incident is 6444 customers, out of which 5600 customers' personal information was not exposed due to encryption.
Metrics
victims
844
Customers
The exposed customers are 844.
Intelligence Sources
Chosun Economy 2026-10-29