RansomHub ransomware group lists www.guymontigers.com on its leak site

• Ransomware group: RansomHub
• Country: Australia
• Sector: Education
• Announcement date: November 12, 2024

RansomHub claims to have breached Guymon Tigers

The RansomHub ransomware group has published a claim on its leak site involving the educational institution operating under the domain www.guymontigers.com. According to an announcement made on November 12, 2024, the group alleges it has successfully breached the organization's network and exfiltrated a significant amount of data.

The group's post claims the attack occurred on October 3, 2024. To substantiate their claims regarding the breach, the group has shared screenshots of numerous files that allegedly contain administrative and personnel information. By listing these files on their public leak site, the group appears to be attempting to exert pressure on the institution through the threat of further exposure.

Details of the alleged data exfiltration

The data allegedly stolen by the RansomHub group includes a wide variety of sensitive documents. Based on the information provided by the threat actor, the leaked content comprises samples of highly confidential information that could impact both staff and students. The volume of the files mentioned in the claim reaches 111,849 files.

The specific types of data identified in the leak include:

• Employee tax forms
• Student health records
• Staff payroll data
• Internal email correspondence
• Budget documents

No information was provided regarding the specific size of the data or the amount of ransom demanded by the group.

About Guymon Tigers

Guymon Tigers is an educational institution located in the state of Victoria, Australia. The organization provides primary education services to its community.

Risk assessment and organizational implications

The alleged data leak poses a significant risk to the individuals involved. The exposure of sensitive information, particularly health and tax records, could lead to a high risk of identity theft and targeted phishing attacks directed at both employees and students. Furthermore, the exposure of such sensitive data could lead to legal and administrative consequences for the institution under relevant US state laws and federal regulations.

RansomHub is identified as a Ransomware-as-a-Service (RaaS) group that emerged in early 2024 and reportedly ceased operations in early 2025. Given this timeline, it is possible that the group employed secondary extortion tactics during this incident. In such scenarios, attackers may use stolen data to pressure victims even if the initial encryption is resolved.

In the wake of such incidents, organizations are often required to fulfill data breach notification obligations and inform the affected individuals to mitigate potential harm. For institutions in the education sector, maintaining robust cybersecurity frameworks is essential to protect student and staff privacy. This typically involves implementing strict access controls, regular security audits, and comprehensive training to defend against the evolving tactics used by RaaS groups.