Mitsubishi Tokyo UFJ Bank Data Breach History
WebsiteMUFG Bank (Mitsubishi UFJ Financial Group) is Japan's largest bank and one of the world's largest financial institutions, with 415 domestic and 100 overseas branches.
This page shows all data breaches of Mitsubishi Tokyo UFJ Bank. View the complete breach timeline, records exposed, root causes, and AI breach risk score. BreachHistory tracks disclosed data breaches worldwide.
Data Breach Timeline — All Mitsubishi Tokyo UFJ Bank Breaches
- 2006 2006 — Mitsubishi Tokyo UFJ Bank: Lost / stolen device, 960000 records 960.0K records Share
Mitsubishi Tokyo UFJ Bank Data Breach Summary
This page tracks the Mitsubishi Tokyo UFJ Bank data breach history and cybersecurity incidents affecting Mitsubishi Tokyo UFJ Bank (Unknown). BreachHistory currently indexes 1 publicly disclosed or catalogued incident spanning 2006, with approximately 960 thousand records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.
The Mitsubishi Tokyo UFJ Bank breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed.
Largest Mitsubishi Tokyo UFJ Bank Data Breaches
The largest indexed incidents include the 2006 — Mitsubishi Tokyo UFJ Bank: Lost / stolen device, 960000 records. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Mitsubishi Tokyo UFJ Bank or a regulator. Below is the list of large data breaches:
- 2006 2006 — Mitsubishi Tokyo UFJ Bank: Lost / stolen device, 960000 records — about 960.0K records exposed · Catalogued incident
What Information Was Exposed?
Depending on the incident, exposed data may include health and medical (PHI) records, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.
Mitsubishi Tokyo UFJ Bank Data Breach 2026
At the time of this update, no Mitsubishi Tokyo UFJ Bank data breach has been catalogued for 2026. New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.
What To Do If You Were Affected
If you believe your account may have been involved in a Mitsubishi Tokyo UFJ Bank data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.
This Mitsubishi Tokyo UFJ Bank breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.