Alphalocker ransomware group lists gazomet.pl & cgas.pl on its leak site

• Ransomware group: Alphalocker
• Country: Poland
• Sector: Energy & Utilities
• Announcement date: September 8, 2025

Alphalocker claims data exfiltration against Polish energy companies

The ransomware group known as Alphalocker has published an announcement on its leak site targeting the organizations gazomet.pl and cgas.pl. According to the group's claims, they have successfully exfiltrated approximately 200 GB of data from the systems of these entities. This announcement, which appeared on the group's leak site on September 8, 2025, marks a significant claim of a successful breach against the targeted organizations.

Publicly available information regarding the Alphalocker group remains limited, making it difficult to establish a comprehensive profile of the threat actor's tactics, techniques, or motivations. In the broader context of modern cybercrime, ransomware groups often employ a strategy known as double extortion. In this model, attackers do not merely encrypt a victim's files to disrupt operations; they also steal sensitive information before the encryption process begins. The threat of leaking this stolen data on a public leak site serves as additional leverage to pressure the victim into paying a ransom. While the ransom demand in this specific instance has not been disclosed, the publication of the breach announcement itself is a hallmark of this extortion method.

Details of the alleged data theft

The threat actor alleges that the stolen data consists of a wide variety of sensitive information. Based on the screenshots provided by the group, the directory structures appear to contain various technical folders, certificates, laboratory data, and administrative documents. The scope of the alleged theft is substantial, with the group claiming a total data volume of 200 GB. The specific types of data identified in the claim include:

• Client information
• Project files
• Financial documentation
• Technical documents

The presence of such diverse data types—ranging from administrative files to technical and laboratory documentation—suggests a deep intrusion into the organizations' internal file systems. While the exact contents of every file cannot be verified from the announcement alone, the breadth of the categories mentioned indicates that the breach could impact multiple departments within the targeted companies.

About the targeted organizations

The organizations targeted in this alleged attack, gazomet.pl and cgas.pl, are part of the energy and utilities sector in Poland. Gazomet is a Poland-based engineering company that manufactures measuring devices, control systems, and gas station equipment for the gas industry. The company provides technological solutions and infrastructure components for gas transmission and distribution. Given the critical nature of the infrastructure and technological solutions provided by such companies, they often represent high-value targets for cybercriminals seeking to disrupt essential services or gain access to sensitive industrial data.

Potential impact and industry implications

The alleged leak poses significant risks to the operational continuity and commercial reputation of the affected organizations. The compromise of financial and client data could lead to severe legal sanctions and administrative fines under the General Data Protection Regulation (GDPR). Beyond the immediate legal and financial consequences for the companies, the publication of this data may trigger secondary risks for the organizations' clients. These risks include identity theft or the execution of highly targeted phishing attacks against individuals or partners who have had their information exposed.

Furthermore, the exposure of technical documentation and laboratory data might weaken the organizations' supply chain security. In the energy and engineering sectors, technical blueprints and system configurations are highly sensitive; if these are leaked, they could potentially facilitate further, more specialized attacks against the organizations or their clients. This highlights a growing trend where technical intellectual property is targeted to create long-term vulnerabilities.

For organizations operating in critical sectors like energy and utilities, maintaining robust defensive postures is essential. Common defensive strategies include implementing strict access controls, maintaining offline backups, and conducting regular security audits. Furthermore, monitoring for unauthorized data exfiltration and implementing comprehensive encryption for data at rest and in transit can help mitigate the impact of such incidents. As ransomware groups continue to evolve, the ability to detect and respond to data theft is becoming as critical as the ability to recover from system encryption.