INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Shinhan BizOn Server Unauthorized Access Occurs

| 2026-10-26 16:47 CRITICAL LOW DATA BREACH
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Executive Summary
AI-generated
On October 26, 2026, Shinhan Bank's BizOn development server was hit by a cyber attack due to unauthorized external access. The incident occurred when APO backup server was being checked for abnormalities and contacted Ahsay, which provides backup solutions, resulting in the confirmation of the possibility of a cyber attack by exploiting vulnerabilities in the backup server. As a result, Shinhan Bank suspects that customer employee information may have been leaked and is verifying the facts with external expert institutions. The incident has affected approximately 1 million customers (according to an unnamed source). The attackers exploited vulnerabilities in Ahsay's solution using T1584.004 - Server technique. Currently, Shinhan Bank is cooperating with regulatory agencies, including KISA and the Ministry of Science and ICT, for reporting and investigation purposes.
Technical Mitigations AI-generated
• Patch Ahsay's backup server to address the zero-day vulnerability. • Implement multi-factor authentication for BizOn development server access. • Monitor and block suspicious text messages or phone calls impersonating Shinhan Bank.
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
Target & Sectors
Global Scope governmentgovernment
Incident Timeline
‎2026/10/26
Shinhan Bank's BizOn development server was hit by a cyber attack due to unauthorized external access.
organisation BizOn
Shinhan Bank's BizOn development server was hit by a cyber attack due to unauthorized external access, prompting the company to report the incident to relevant authorities and launch an investigation.
organisation APO
The incident occurred when APO backup server was being checked for abnormalities and contacted Ahsay, which provides backup solutions, resulting in the confirmation of the possibility of a cyber attack by exploiting vulnerabilities in the backup server.
organisation Shinhan Bank
Shinhan Bank immediately blocked the external access route and took measures to protect related accounts.
organisation KISA
The company has reported the incident to KISA (Korea Internet & Security Agency) and the Personal Information Protection Commission in accordance with relevant laws.
organisation Korea Internet & Security Agency
The company has reported the incident to KISA (Korea Internet & Security Agency) and the Personal Information Protection Commission in accordance with relevant laws.
organisation the Personal Information Protection Commission
The company has reported the incident to KISA (Korea Internet & Security Agency) and the Personal Information Protection Commission in accordance with relevant laws.
organisation The Ministry of Science
The Ministry of Science and ICT's joint investigation team, composed of public and private sector organizations, has also been cooperating with the company's full cooperation.
organisation ICT
The Ministry of Science and ICT's joint investigation team, composed of public and private sector organizations, has also been cooperating with the company's full cooperation.
organisation The Ministry of Public Security
The Ministry of Public Security is also committed to implementing the instructions of the joint investigation team to enhance the security level.
‎November 3, 2026
Threat actors exploited a vulnerability in the Shinhan BizOn development server, allowing unauthorized access.
industry Government
General Document Context
organisation Security Education - Event Name
■ The largest AI security conference in Korea will be held - Free Invitation for Security Officials/7-hour Security Education - Event Name: 2026 Artificial Intelligence Security Conference (AIS 2026) - Theme: Artificial Intelligence-based Information Protection Technology and Sharing of New Cyber Threat Information - Date: November 3, 2026 (Tuesday) 09:00-17:00 - Venue: Korea Advanced Institute…
tactic T1588.007 - Artificial Intelligence
■ The largest AI security conference in Korea will be held - Free Invitation for Security Officials/7-hour Security Education - Event Name: 2026 Artificial Intelligence Security Conference (AIS 2026) - Theme: Artificial Intelligence-based Information Protection Technology and Sharing of New Cyber Threat Information - Date: November 3, 2026 (Tuesday) 09:00-17:00 - Venue: Korea Advanced Institute…
organisation AIS
■ The largest AI security conference in Korea will be held - Free Invitation for Security Officials/7-hour Security Education - Event Name: 2026 Artificial Intelligence Security Conference (AIS 2026) - Theme: Artificial Intelligence-based Information Protection Technology and Sharing of New Cyber Threat Information - Date: November 3, 2026 (Tuesday) 09:00-17:00 - Venue: Korea Advanced Institute…
organisation Information Protection Technology
■ The largest AI security conference in Korea will be held - Free Invitation for Security Officials/7-hour Security Education - Event Name: 2026 Artificial Intelligence Security Conference (AIS 2026) - Theme: Artificial Intelligence-based Information Protection Technology and Sharing of New Cyber Threat Information - Date: November 3, 2026 (Tuesday) 09:00-17:00 - Venue: Korea Advanced Institute…
organisation Daily Security
■ The largest AI security conference in Korea will be held - Free Invitation for Security Officials/7-hour Security Education - Event Name: 2026 Artificial Intelligence Security Conference (AIS 2026) - Theme: Artificial Intelligence-based Information Protection Technology and Sharing of New Cyber Threat Information - Date: November 3, 2026 (Tuesday) 09:00-17:00 - Venue: Korea Advanced Institute…
general_metric 600 people
■ The largest AI security conference in Korea will be held - Free Invitation for Security Officials/7-hour Security Education - Event Name: 2026 Artificial Intelligence Security Conference (AIS 2026) - Theme: Artificial Intelligence-based Information Protection Technology and Sharing of New Cyber Threat Information - Date: November 3, 2026 (Tuesday) 09:00-17:00 - Venue: Korea Advanced Institute…
Intelligence Sources
Dailysecu 2026-10-26