Colegio Notre Dame Campinas Listed by thegentlemen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

Ransomware operations targeting educational institutions have become a recurring feature of the threat landscape, with groups publicly listing victims on dedicated leak sites to pressure organizations into paying ransoms. On May 6, 2026, the ransomware group thegentlemen listed Colegio Notre Dame Campinas on its site, claiming responsibility for a ransomware attack that involved the exfiltration of internal files. The number of people affected remains unknown, and no further details on the scale or method of the incident have been disclosed.

What happened

The incident centers on a listing posted by thegentlemen on May 6, 2026. The group claims to have carried out a ransomware attack against Colegio Notre Dame Campinas and to have exfiltrated internal files. No confirmation of the attack from the school has been reported, and details such as the volume of data, the specific files involved, or the timeline of the intrusion are not publicly available.

Inside thegentlemen

Thegentlemen is a ransomware group that follows the common pattern of encrypting systems and threatening to publish stolen data unless a ransom is paid. Such groups typically maintain leak sites where they name victims and post samples or descriptions of claimed data. The listing of Colegio Notre Dame Campinas constitutes the group’s claim of responsibility; independent verification of the underlying incident has not been established in available reporting.

Who is Colegio Notre Dame Campinas?

Colegio Notre Dame Campinas is a private Catholic school in Campinas, São Paulo, Brazil, founded in 1961 by the Congregation of Holy Cross. It provides education from kindergarten through secondary school, including international curriculum options. The institution serves families in the Campinas region and maintains records typical of schools of its type, such as student enrollment information and administrative files.

What data was at risk

The only detail provided is that internal files were allegedly exfiltrated. The precise contents of those files have not been disclosed. Organizations in the education sector commonly hold student personal information, family contact details, academic records, and staff data, but it is not confirmed whether any of these categories were involved in this case.

What's at stake

Exposure of internal school files can affect the privacy of students and families whose information is held by the institution. For the school itself, such an incident may require forensic review, notification obligations, and operational adjustments. The absence of Reported Details on the data types limits assessment of the exact consequences for individuals.

Were you affected?

Individuals connected to the school can begin by monitoring official communications from Colegio Notre Dame Campinas for any guidance on the incident. Running a free exposure scan of an email address against known breach data sets offers one practical way to check whether personal information has appeared in publicly referenced incidents.

AICompiled with AI assistance from public sources and published under our editorial standards.