high severity November 12, 2023 · 4 min read Unverified claim — what this is

Deutsche Energie-Agentur Listed by ALPHV Ransomware Group

If you are a customer of Deutsche Energie-Agentur, here’s what is being claimed, and what it would mean for you.

Deutsche Energie-Agentur was listed on Alphv's leak site. Alphv claims to have stolen internal data. This is the group's claim, not a confirmed finding.

Deutsche Energie-Agentur Listed by ALPHV Ransomware Group

On November 12, 2023, the German Energy Agency (dena) appeared on the leak site of the alphv ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the federally owned organization responsible for supporting Germany’s energy transition and climate-protection policies. The number of people whose data may be exposed remains unknown, and the precise contents of the stolen files have not been detailed in the public listing.

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Reported Details from the Listing

The alphv leak site entry, still accessible via the .onion link tracked by ransomware.live, states that dena suffered a ransomware incident in which attackers successfully exfiltrated internal files. The disclosure does not quantify the volume of data taken, name specific record counts, or list exact data types such as customer records or employee personal information. It simply states that files were stolen and threatens further publication if demands are not met. dena is described on the site as a competence center for applied energy transition, a project company wholly owned by the Federal Republic of Germany.

November 12, 2023 marks the first public appearance of the dena listing. No separate breach notification from the agency itself had surfaced at the time the leak site posted the material.

Why This Matters for You and Your Family

When a government-backed agency like dena is breached, the ripple effects reach ordinary citizens. The agency works with partners across politics, business, science, and society; its internal files could contain correspondence, project details, or personal data tied to individuals who participated in energy-efficiency programs, grant applications, or research initiatives. Even if your name is not prominently featured, any leaked document that links your address, email, or phone number to an energy-related program can become a building block for identity thieves.

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Report details & sourcing

Attributed to Alphv · 727 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed November 12, 2023

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

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Alphv — 727 incidents tracked

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