Colegio Notre Dame Campinas listed on thegentlemen ransomware leak site

• Ransomware group: thegentlemen
• Country: Brazil
• Sector: Education
• Announcement date: May 6, 2026

The educational institution Colegio Notre Dame Campinas, located in Brazil, has been listed on the leak site of the ransomware group known as thegentlemen. The group has issued a claim regarding a potential data breach involving the organization.

The details of the claim

According to a post published by the group on May 6, 2026, the ransomware group thegentlemen claims that data belonging to Colegio Notre Dame Campinas has been exfiltrated. The announcement indicates that the group allegedly obtained access to the institution's network on April 27, 2026.

Information regarding the group known as thegentlemen remains limited in the public domain. Ransomware attack patterns often involve a tactic known as double extortion, where threat actors not only encrypt an organization's systems to disrupt operations but also steal sensitive information to use as leverage. By threatening to leak this data on a public leak site, attackers aim to pressure the victim into paying a ransom to prevent the disclosure of sensitive files.

Data involved in the alleged breach

Regarding the specifics of the incident, the group has not provided any specific information or screenshots regarding the nature of the allegedly leaked data. The listing does not name any specific data types or provide details on the volume of information involved.

About Colegio Notre Dame Campinas

Colégio Notre Dame Campinas is a private Catholic school located in Campinas, Brazil. The institution offers a comprehensive educational curriculum ranging from kindergarten through high school. Founded in 1961 by the Congregation of Holy Cross, the institution aims to combine academic excellence with Catholic values.

Potential risks and implications

Should the leak claim be verified, there may be a risk of exposure for personal data belonging to students and staff. The disclosure of sensitive information held by educational institutions could potentially lead to identity theft or targeted phishing attacks against the affected individuals. Such attacks often exploit the trust established within educational communities to gain further access or financial gain.

Under Brazil's LGPD (General Data Protection Law), the institution may face administrative sanctions due to a potential data security breach. Beyond legal and regulatory consequences, the institution could experience reputational damage and disruptions to its operational processes. A successful breach can undermine the trust that parents, students, and staff place in the institution to protect their private information.

To defend against such threats, organizations in the education sector often implement various defensive measures. These include robust network monitoring to detect unauthorized access, regular security awareness training for staff and students to prevent phishing, and the implementation of multi-factor authentication across all systems. Furthermore, maintaining rigorous data encryption and regular backups can serve as critical layers of defense against the disruptive and extortionate nature of modern ransomware attacks.