USGS listed by fog ransomware group on leak site

• Ransomware group: fog
• Country: United States
• Sector: Government & Defense
• Announcement date: March 6, 2025

The threat actor known as fog has listed the United States Geological Survey (USGS) on its leak site, claiming to possess a significant amount of data belonging to the organization. This announcement, made on March 6, 2025, suggests a major data breach involving the federal agency.

The details of the claim

The fog group included the USGS within a specific post on their leak site titled "The 19 biggest gitlabs". According to the threat actor, the breach occurred as early as July 12, 2023. The group claims to have exfiltrated a massive dataset, which they allege was obtained directly from the organization's GitLab infrastructure. To support their claim, the announcement provided links intended for downloading the dataset, referencing both the official website of the USGS and the organization's GitLab URL.

Data involved in the incident

The announcement specifies that the alleged data set is 1.9 TB in size. The threat actor claims this information was obtained from the organization's GitLab infrastructure. However, the listing does not provide any detailed information regarding the specific nature of the data or the specific files contained within the set. The listing names no specific data types.

The organization profile

The United States Geological Survey (USGS) is a federal research agency that provides scientific data about natural resources, natural hazards, and ecosystems. It operates under the Department of the Interior and conducts the country's geographic and geological mapping efforts.

Implications and security considerations

The volume of the alleged data leak may pose risks to the organization's digital infrastructure and operational security. Such leaks targeting government entities could lead to the exposure of sensitive technical documentation or source code. Given that this involves a US federal agency, a potential data breach may trigger investigations under federal regulations and security protocols. Secondary risks may include the potential use of the leaked data in phishing campaigns or supply chain attacks.

In the broader context of cybersecurity, ransomware groups often utilize a tactic known as double extortion. In these scenarios, attackers do not just encrypt an organization's systems to demand a ransom; they also steal sensitive data and threaten to leak it on public forums if the ransom is not paid. This increases the pressure on the victim, as the threat of public exposure can cause significant reputational and operational damage.

For organizations within the government and defense sector, protecting infrastructure like GitLab—which is used for version control and collaborative software development—is critical. A breach of such systems can expose the building blocks of an agency's digital tools. To defend against such threats, organizations typically implement multi-factor authentication, strict access controls, and continuous monitoring of their development environments. Furthermore, regular audits of external-facing infrastructure and robust incident response plans are essential to mitigate the impact of potential exfiltration events.

Publicly available information regarding the fog group remains limited, making it difficult to determine the full scope of their operations or their specific motivations beyond the claims made in their recent announcement.