Collge Superieur De Montreal Listed by rhysida Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
Collge Superieur De Montreal was listed by the Rhysida ransomware group on November 24, 2025, after internal files were exfiltrated in a ransomware attack. Individuals connected to the college are advised to check whether their information was affected and take appropriate protective steps.
Inside the incident
The only confirmed detail is the appearance of Collge Superieur De Montreal on the rhysida leak site on the reported date. The entry asserts that files were taken from the organisation. No further technical details, such as the initial access method, encryption status, or ransom demands, have been made public. The number of people potentially affected remains unknown.
The group behind it: rhysida
Rhysida is a ransomware operation that has conducted intrusions since at least 2023. Public reporting describes the group as using double-extortion tactics, in which data is copied before encryption and later threatened with publication if a ransom is not paid. The group maintains a leak site where it lists organisations it claims to have targeted. In this case the site lists Collge Superieur De Montreal; that listing constitutes the group’s claim and has not been independently verified beyond the site’s own posting.
Collge Superieur De Montreal and its sector
Collge Superieur De Montreal operates as an educational institution. Organisations in this sector routinely maintain records that include student enrolment information, staff employment details, and administrative correspondence. A breach at such an institution can affect current and former students as well as employees, because these records are retained for regulatory, academic, and operational purposes over long periods.
What was likely exposed
The rhysida listing refers to internal files that were allegedly exfiltrated. No inventory of specific file types or data categories has been published.
- Student and personnel records commonly held by educational institutions
- Administrative and operational documents
- Any additional materials stored on the affected systems
What's at stake
Individuals whose information appears in the exfiltrated files face the possibility that their personal details could be used for identity-related fraud or targeted phishing. The organisation may incur costs related to investigation, notification, and remediation. Because the scale of the data remains undisclosed, the full extent of these consequences cannot yet be measured.
Were you affected?
Begin by monitoring official communications from Collge Superieur De Montreal for any notifications. Review bank and credit accounts for unusual activity and consider placing fraud alerts with credit reporting agencies if personal identifiers were involved. Readers may also run a free exposure scan of their email address against known breach data sets to check for prior appearances of their information.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
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Publicly posted by rhysida — 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.