InfoMontreal Listed by sinobi Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
InfoMontreal was listed by the sinobi ransomware group on February 05, 2026, after internal files were exfiltrated in a ransomware attack. An undisclosed number of people may have been affected; individuals should check their status and take appropriate protective measures.
Inside the incident
The only confirmed public information is the February 5, 2026 listing by sinobi and the group’s statement that internal files were allegedly exfiltrated. No figure for records or individuals affected has been released, and the method of initial access or encryption has not been disclosed. InfoMontreal has not issued a public statement on the matter.
Who is sinobi?
Sinobi is a ransomware operator that publishes victim names on a dedicated leak site when ransom demands are not met. The group’s standard approach includes encrypting systems and removing copies of data, then using the leak site to pressure targets. Its listings are presented by the group itself and are not independently verified at the time of posting.
InfoMontreal and its sector
InfoMontreal operates in the business-services sector. Organizations of this type commonly maintain client records, contracts, financial documentation, and operational correspondence. A listing that references internal files therefore touches on material that can include information belonging to other entities.
What data was at risk
The listing refers only to “internal files.” No inventory of specific data categories has been published. Organizations in the business-services sector routinely hold contact details, contractual terms, billing information, and project-related documents; whether any of these categories were among the files referenced remains unconfirmed.
The real-world impact
Until the contents of the exfiltrated files are clarified, the primary consequence for affected parties is uncertainty about whether their own records have circulated beyond the original holder. For the organization, the incident adds to the administrative and legal workload that follows any ransomware event, including notifications and potential regulatory review.
Were you affected?
Because the number of people or entities involved has not been disclosed, individuals and businesses should treat any prior contact with InfoMontreal as a reason to review their own records. The following steps are standard after any reported incident of this kind:
- Contact InfoMontreal directly to ask what information, if any, may relate to you.
- Monitor accounts and statements for unusual activity.
- Run a free exposure scan of your email address against known breach data sets to check for prior appearances.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
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Publicly posted by sinobi — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.