RGD Consulting Engineers listed on interlock leak site

• Ransomware group: interlock
• Country: Australia
• Sector: Professional Services
• Announcement date: January 7, 2026

Interlock claims data breach against RGD Consulting Engineers

The ransomware group known as interlock has listed the engineering firm RGD Consulting Engineers on its leak site. This announcement, which appeared on January 7, 2026, serves as a claim by the threat actor that they have successfully exfiltrated data belonging to the organization. At this time, public information regarding the specific methods or the identity of the interlock group remains limited.

Ransomware attacks often involve a tactic known as double extortion. In these scenarios, threat actors do not merely encrypt an organization's systems to disrupt operations; they also steal sensitive information before the encryption phase. The attackers then threaten to publish this stolen data on public leak sites if their demands are not met. This pressure tactic is designed to maximize the impact of the attack by leveraging the threat of reputational damage and regulatory scrutiny against the victim.

Details of the alleged data leak

According to the listing provided by interlock, the group has published data they claim belongs to RGD Consulting Engineers. The information provided by the attackers includes screenshots of folder structures that appear to belong to various internal departments within the organization. This visual evidence suggests that the breach may have reached into several core business functions.

The folder structures identified in the leak include directories related to the following areas:

• Accounting data
• Development data
• Marketing data
• OneDrive data

While the group has published these directory structures, no information was provided regarding the total size of the data stolen or the specific number of files involved. Furthermore, the group has not issued a specific ransom demand in the current listing.

About RGD Consulting Engineers

RGD Consulting Engineers is a full-service engineering firm based in Florida. The company specializes in mechanical, electrical, plumbing, and structural design. They provide cost-effective engineering solutions to various markets across the United States and the Caribbean.

Potential impact and industry implications

The data allegedly leaked may contain sensitive information regarding the institution's operational processes and its employees. Because the organization conducts its operations out of Florida, this situation may trigger legal processes under U.S. state data privacy regulations. The exposure of such data to third parties could lead to significant reputational damage and could facilitate targeted phishing attacks against the firm's clients.

Furthermore, the disclosure of technical details related to engineering projects may weaken the institution's competitive advantage and increase supply chain risks. In the professional services sector, the integrity of project documentation is vital for maintaining client trust and securing long-term contracts.

To defend against such threats, organizations in the engineering and professional services sectors often implement various defensive measures. These include robust backup strategies to ensure data availability, multi-factor authentication to secure access to cloud environments like OneDrive, and continuous monitoring of network traffic to detect unauthorized data exfiltration. Additionally, regular security awareness training can help employees recognize the phishing attempts that often follow a data breach.