BMO Financial Group Data Breach History
WebsiteBMO Financial Group is a Canadian multinational bank.
This page shows all data breaches of BMO Financial Group. View the complete breach timeline, records exposed, root causes, and AI breach risk score. BreachHistory tracks disclosed data breaches worldwide.
Data Breach Timeline — All BMO Financial Group Breaches
- 2018 2018 — 90k with Simplii Unknown records Share
- 2012 2012 — BMO Financial Group: The laptop of an employee who works for a BMO… Unknown records Share
BMO Financial Group Data Breach Summary
This page tracks the BMO Financial Group data breach history and cybersecurity incidents affecting BMO Financial Group (Canada). BreachHistory currently indexes 2 publicly disclosed or catalogued incidents spanning 2012 through 2018, with approximately an unknown number of 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 BMO Financial Group 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 BMO Financial Group Data Breaches
Indexed BMO Financial Group incidents are listed below. Where a public count is unavailable, the catalog shows unknown records exposed. Open each page for attack method, data types, and sources.
- 2018 2018 — 90k with Simplii — about Unknown records exposed · Catalogued incident
- 2012 2012 — BMO Financial Group: The laptop of an employee who works for a BMO… — about Unknown records exposed · Catalogued incident
What Information Was Exposed?
Depending on the incident, exposed data may include email addresses, names, physical addresses, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.
BMO Financial Group Data Breach 2026
At the time of this update, no BMO Financial Group 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 BMO Financial Group 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 BMO Financial Group 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.