INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Burger King Japan Exposes 11 Million Customer Records in Breach

| 2026-10-16 12:01 HIGH LOW DATA BREACH
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Executive Summary
AI-generated
On October 16, 2026, Burger King Japan disclosed a major data breach after attackers accessed a server containing 11.18 million customer records, exposing the personal information of users who used the company's official smartphone app. The breach occurred between October 2 and October 7, 2026, with no evidence that credit card numbers were compromised or user credentials were accessed. Burger King Japan has reported the incident to Japan's Personal Information Protection Commission and is investigating how attackers gained access to the server, working with external cybersecurity experts. Affected customers are advised to watch for suspicious emails, SMS messages, and phone calls, and to avoid clicking URLs, opening attachments, or entering member information or passwords.
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
JP
Incident Timeline
‎October 2, 2026
Threat actors exploited a vulnerability in Burger King Japan's systems to gain unauthorized access, resulting in the exposure of approximately 11 million customer records.
‎Friday, October 2, 2026
Unauthorized access to Burger King Japan's systems occurred between Friday, October 2, 2026, and Wednesday, October 7, 2026.
‎October 7, 2026
Threat actors exploited vulnerabilities in Burger King Japan's server to access 11 million customer records.
organisation Personal Information Protection Commission
Burger King Japan has reported the breach to Japan's Personal Information Protection Commission (PPC) and is now also investigating how the attackers accessed the compromised server, with help from external cybersecurity experts.
organisation PPC
Burger King Japan has reported the breach to Japan's Personal Information Protection Commission (PPC) and is now also investigating how the attackers accessed the compromised server, with help from external cybersecurity experts.
organisation The Blue Report 2026
The Blue Report 2026 measures defenses technique by technique across 338 million simulations run in customer production environments.
‎Wednesday, October 7, 2026
Unauthorized access to Burger King Japan's systems occurred between October 2 and October 7, 2026.
‎October 13
Burger King Japan concluded a follow-up investigation on October 13 and apologized to customers whose data was stolen in early October.
target_region Japan
In a Thursday press release, Burger King Japan said it concluded a follow-up investigation on October 13 and apologized to customers whose data was stolen in early October and leaked online.
‎October 13, 2026
Threat actors exploited a vulnerability in Burger King Japan's systems to expose 11 million customer records.
‎Tuesday, October 13, 2026
Unauthorized access to Burger King Japan's systems occurred between October 2 and October 7, 2026.
‎2026/10/16
Threat actors accessed a server containing 11.18 million customer records of Burger King Japan's official app, exposing the sensitive information of approximately 11 million customers.
organisation Burger King Japan
Burger King Japan data breach exposes 11 million customer records.
data_breach 11 customer records
Burger King Japan data breach exposes 11 million customer records.
organisation Burger King
Burger King Japan, the Japanese subsidiary of global fast-food giant Burger King, disclosed a major data breach after attackers accessed a server containing 11.18 million customer records.
data_breach 11.18 customer records
Burger King Japan, the Japanese subsidiary of global fast-food giant Burger King, disclosed a major data breach after attackers accessed a server containing 11.18 million customer records.
organisation Daiichi Kosho
This incident adds to a wave of cyberattacks that have impacted several major Japanese companies since the start of the year, including entertainment system maker Daiichi Kosho , cloud and digital infrastructure firm IDC Frontier , Japanese publishing giant Nikkei , private railway operator Keio , car-sharing service Times Car , cloud and data center service provider Sakura Internet , taxi…
organisation Frontier
This incident adds to a wave of cyberattacks that have impacted several major Japanese companies since the start of the year, including entertainment system maker Daiichi Kosho , cloud and digital infrastructure firm IDC Frontier , Japanese publishing giant Nikkei , private railway operator Keio , car-sharing service Times Car , cloud and data center service provider Sakura Internet , taxi…
Tactical Metrics
Metrics
data_breach
11,000,000
Customer Records
Burger King Japan data breach exposes 11 million customer records.
Metrics
data_breach
11,180,000
Customer Records
Burger King Japan, the Japanese subsidiary of global fast-food giant Burger King, disclosed a major data breach after attackers accessed a server containing 11.18 million customer records.
Intelligence Sources
BleepingComputer 2026-10-16