SIRIUS S.R.L. Listed by nitrogen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On January 30, 2025, the ransomware group known as nitrogen listed SIRIUS S.R.L. on its leak site, claiming the Italian firm had been hit by a ransomware attack that involved the exfiltration of internal files. Public detail remains limited: the number of people affected is unknown, and no further confirmation of the incident has been independently verified beyond the group's listing.

SIRIUS S.R.L. specialises in energy automation, focusing on the management and remote control of renewable energy plants. A breach involving a company that handles operational technology and support systems for critical energy infrastructure raises clear questions about the potential reach of any compromised material, even when the precise contents stay undisclosed.

What happened

According to the available record, nitrogen claimed responsibility for a ransomware attack against SIRIUS S.R.L. and listed the company on its leak site on or around January 30, 2025. The group stated that internal files had been exfiltrated as part of the attack. No public information has confirmed the exact date the intrusion began, the method of initial access, the volume of data taken, or whether encryption of systems also occurred. The number of individuals whose information may have been involved is listed as unknown. Beyond the group's own claim of the listing and the description of internal files being removed, further operational details have not been released.

Inside nitrogen

Nitrogen is a ransomware operation that has been active in public reporting since mid-2024. Like many contemporary groups, it typically follows a double-extortion model: operators claim to steal data before encrypting systems and then threaten to publish the material if a ransom is not paid. The group has previously listed organisations across manufacturing, professional services and technology sectors on its leak site. Its posts generally consist of short claims of successful intrusion and data theft rather than detailed technical disclosures. In this case the listing of SIRIUS S.R.L. should be treated as an unverified claim by the group; no independent confirmation of the full scope of the incident has been published in the available facts.

SIRIUS S.R.L. and its sector

SIRIUS S.R.L. is a company that specialises in energy automation, particularly the management and remote control of renewable energy plants. Its services include software development, commissioning of systems, training of personnel and ongoing technical support. Organisations of this type sit at the intersection of information technology and operational technology: they routinely handle configuration data for plant control systems, remote-access credentials, engineering documentation, client contracts and support records. Because renewable-energy facilities form part of wider electricity networks, any compromise of the firms that design, commission or maintain their automation layers can have implications beyond a single office network. The sector's reliance on specialised software and continuous remote connectivity makes the protection of internal files especially consequential.

What was likely exposed

The only data category named in the public record is "internal files" said to have been exfiltrated during the ransomware attack. No inventory of specific file types, databases or personal records has been disclosed. Companies that provide energy-automation services typically store engineering drawings, SCADA or PLC configuration files, remote-access credentials, client contact lists, project documentation, training materials and contractual correspondence. Whether any of these categories were among the material nitrogen claims to hold remains unconfirmed. The exact contents of the alleged exfiltration are therefore unknown, and no statement of personal data volumes or specific document titles has been made public.

Why it matters

For individuals whose contact details, training records or project involvement appear in SIRIUS S.R.L. systems, the principal risks are phishing, social-engineering attempts and potential misuse of professional credentials. For the organisation itself, the exposure of internal engineering files could reveal network architecture, control-system parameters or client relationships that competitors or other threat actors might later exploit. Because the company supports remote control of renewable-energy plants, any compromise of operational documentation also carries a theoretical risk to the integrity of plant management processes, even if no direct impact on generation assets has been reported. The absence of confirmed numbers of affected people does not remove the need for vigilance among staff, clients and partners who have shared information with the firm.

If your data was in this claimed breach

If you have worked with or supplied information to SIRIUS S.R.L., treat the possibility of exposure seriously even though the precise data set remains unconfirmed. Change passwords used in any shared systems, enable multi-factor authentication wherever available, and watch for unexpected emails or calls that reference energy projects or technical support. Monitor financial and professional accounts for unusual activity. Readers can also run a free exposure scan of their email address to check whether their information has already appeared in known breach data sets. Stay alert to further official statements from the company or relevant authorities as more verified detail may emerge.

AICompiled with AI assistance from public sources and published under our editorial standards.