Solar City Tyre Service listed on Blacklock ransomware leak site

• Ransomware group: Blacklock
• Country: Australia
• Sector: Retail & E-Commerce
• Announcement date: June 4, 2025

Blacklock claims data breach at Solar City Tyre Service

The Blacklock ransomware group has listed Solar City Tyre Service on its dedicated leak site, claiming that the organization has been the victim of a data breach. This announcement, made on June 4, 2025, follows a claimed attack date of June 3, 2025. While the group has publicly identified the target, the specific details regarding the nature of the breach remain limited to the group's initial announcement.

Ransomware groups often utilize leak sites to increase pressure on their victims through a tactic known as double extortion. In these scenarios, threat actors do not only encrypt an organization's data to disrupt operations but also steal sensitive information to threaten its public release. By listing a victim on a leak site, the group aims to damage the victim's reputation and force compliance with ransom demands. However, in this specific instance, the group has not provided further details regarding the incident.

Details of the claimed attack

According to the announcement posted by the Blacklock group, the threat actors claim to have successfully gained access to the internal systems of Solar City Tyre Service. The group asserts that they have obtained data from the organization during this unauthorized access. Despite these claims, the announcement is notably lacking in specific technical or financial details.

The listing does not provide information regarding a specific ransom demand, nor does it specify the total size of the data that was allegedly exfiltrated. Furthermore, the group has not provided a file count to quantify the scope of the breach. At this stage, the provided information is limited to the group's communication channels, as the shared screenshots do not contain any actual data samples or specific file contents.

The affected organization

Solar City Tyre Service is an independent tire service business that has been established since 1994. The organization operates within the Shepparton region of Australia. It serves a diverse client base, including commercial companies, local farmers, and various earthmoving firms.

Potential impact and organizational risks

This incident may pose a significant risk to the operational continuity of Solar City Tyre Service. While the exact content of the exfiltrated data remains unclear, the potential exposure of information belonging to customers and business partners could lead to substantial reputational damage for the organization.

Under Australian privacy laws, the organization may be required to fulfill specific data breach notification obligations depending on the nature of the information involved. Additionally, there is a secondary risk that the obtained data could potentially be used in future targeted phishing campaigns or identity theft attempts against the organization or its clients.

For organizations operating in the retail and service sectors, such incidents highlight the importance of robust cybersecurity frameworks. Common defensive steps for organizations include implementing multi-factor authentication, maintaining regular offline backups, and conducting regular employee training to recognize phishing attempts. Because information about the Blacklock group remains limited in the public domain, organizations must remain vigilant against the evolving tactics used by such threat actors.