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Cyber Threat
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Ransomware victim Energy

Siem Srl

Listed by Spacebears on · organisation based in Italy

www.siem.it

Disclosed
Feb 13, 2026
Leak-site listing date
Threat group
Spacebears
166 victims listed
Country
Italy
#5 most targeted
Sector
Energy

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Spacebears. Figures and technique mappings are quoted from the source data, not inferred.

About the Spacebears group

Space Bears is a double-extortion ransomware group that emerged in April 2024, distinguished by a professional "corporate" aesthetic on its leak site, leveraging Phobos RaaS infrastructure and targeting small-to-medium organizations in manufacturing, technology, and healthcare across the US and Europe. Spacebears has listed 157 victims since April 2024.

Vulnerabilities Spacebears is recorded exploiting

5 of these 5 are in the CISA Known Exploited Vulnerabilities catalog, 5 of them recorded by CISA as used in ransomware campaigns. CVEs attributed to Spacebears across its reported activity. There is no indication that any of these was involved in the Siem Srl incident — the source data does not record an entry point.

Incident analysis

Siem Srl was listed by Spacebears ransomware, a group with 166 victims recorded in this database. The listing appeared on the group's leak site on February 13, 2026.

Siem Srl is based in Italy and operates in the Energy sector. Italy ranks #5 worldwide for ransomware disclosures, with 618 victims in this database.

Sector context. Energy sector attacks can have critical infrastructure implications. Ransomware on operational technology (OT) networks can disrupt power generation and distribution, elevating the urgency of recovery.

Spacebears typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was Siem Srl attacked by ransomware?

Yes. Siem Srl was listed as a victim of the Spacebears ransomware group on February 13, 2026. The organisation is based in Italy and operates in the Energy sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Siem Srl?

Siem Srl was attacked by Spacebears ransomware. Spacebears is one of the most active ransomware groups, having claimed 166 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Siem Srl ransomware attack occur?

The ransomware attack on Siem Srl was disclosed on February 13, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the Siem Srl ransomware attack?

The specific data stolen from Siem Srl has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Energy organisation, Siem Srl likely held sensitive business data, client information, and operational records.

How can organisations protect against Spacebears attacks?

To defend against Spacebears and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.