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Cyber Threat
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Ransomware victim Manufacturing

Sumitomo Electric Bordnetze

Listed by Aurora on · organisation based in Germany

Sumitomo Electric Bordnetze

Disclosed
Jun 16, 2026
Leak-site listing date
Threat group
Aurora
58 victims listed
Country
Germany
#2 most targeted
Sector
Manufacturing

ThreatAI analysis

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

About the Aurora group

Aurora is a ransomware group associated with a multi-purpose Go-based malware distributed by multiple criminal teams from mid-2022, also sold as an infostealer/botnet under the same name on underground forums. Aurora has listed 42 victims since April 2026.

Incident analysis

Sumitomo Electric Bordnetze was listed by Aurora ransomware, a group with 58 victims recorded in this database. The listing appeared on the group's leak site on June 16, 2026.

Sumitomo Electric Bordnetze is based in Germany and operates in the Manufacturing sector. Germany ranks #2 worldwide for ransomware disclosures, with 1,006 victims in this database.

Sector context. Manufacturing companies are frequently targeted because production downtime directly translates to financial loss. Ransomware operators exploit this time-sensitivity to demand higher ransoms and faster payment.

Aurora 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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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 Sumitomo Electric Bordnetze attacked by ransomware?

Yes. Sumitomo Electric Bordnetze was listed as a victim of the Aurora ransomware group on June 16, 2026. The organisation is based in Germany and operates in the Manufacturing sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Sumitomo Electric Bordnetze?

Sumitomo Electric Bordnetze was attacked by Aurora ransomware. Aurora is one of the most active ransomware groups, having claimed 58 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Sumitomo Electric Bordnetze ransomware attack occur?

The ransomware attack on Sumitomo Electric Bordnetze was disclosed on June 16, 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 Sumitomo Electric Bordnetze ransomware attack?

The specific data stolen from Sumitomo Electric Bordnetze 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 Manufacturing organisation, Sumitomo Electric Bordnetze likely held sensitive business data, client information, and operational records.

How can organisations protect against Aurora attacks?

To defend against Aurora 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.