Was WINTER Ingenieure hit by ransomware?

WINTER Ingenieure was listed by the Akira ransomware operation (Germany), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Akira ransomware group?

Akira is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the WINTER Ingenieure breach?

Akira published data attributed to WINTER Ingenieure. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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WINTER Ingenieure

Claimed by Akira · listed 1 day ago

Age

since listed · data leaked

Status timeline

ListedAug 25, 2026
Data leakeddate unknown

At a glance

Group: Akira
Status: Data leaked
Country: Germany
Sector: Manufacturing
Listed on leak site: Aug 25, 2026

About the victim

AI dossier — public-source company profile

WINTER Ingenieure is a German engineering firm specializing in the planning and monitoring of technical building equipment installations across Germany. With over 140 employees distributed across Düsseldorf, Berlin, and Hamburg, they focus on integrating technical components into buildings with emphasis on functionality, sustainability, and cost-effectiveness.

Industry: Building Systems Engineering & Technical Planning
Address: Düsseldorf, Berlin, and Hamburg, Germany
Employees: 140+

Attack summary

Severity: high — Confirmed exfiltration of significant PII at scale (140+ employees' passport data, IDs, addresses, contacts) plus confidential business data (projects, specifications). No ransom demand stated, but data published status confirms breach disclosure.

The Akira group claims to have exfiltrated approximately 340 GB of corporate data, including employee personal information (German passports, IDs, addresses, phone contacts), confidential project files, and technical specifications.

high

Data the group says was taken

AI dossier — extracted from the leak post

German passports
Employee identification documents
Employee addresses and contact information
Confidential project files
Technical specifications
Corporate data

What the group claims

WINTER Ingenieure specializes in planning and monitoring the construction of technical building equipment across Germany, focusing on functionality, sustainability, and cost-effectiveness. W ith a team of over 140 employees located in Düsseldorf, Berlin, and Hamburg, they integrate tec hnical components into buildings innovatively. We will upload 340gb of corporate data soon. Employee personal information (German passports, I Ds, addresses, phones contacts), confidential files, projects, lots of specifications and so on .

Source

Indexed 1 day ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Akira

Akira is a ransomware group that emerged in April 2023, operating with primarily financial motivations and has rapidly established itself as a significant threat actor with over 1,500 documented victims. The group's country of origin remains unclear, though they operate as a Ransomware-as-a-Service (RaaS) model, recruiting affiliates to conduct attacks while the core group maintains the ransomware infrastructure and negotiation processes. Akira employs multi-faceted attack methodologies including exploitation of VPN vulnerabilities, particularly targeting Cisco VPN appliances, and utilizes living-off-the-land techniques along with legitimate administrative tools to avoid detection, while implementing double extortion tactics by exfiltrating sensitive data before deploying their encryption payload. The group has demonstrated a preference for targeting organizations in the United States, Canada, Germany, United Kingdom, and Italy, with a particular focus on manufacturing, business services, technology, and construction sectors, though they have shown willingness to attack various industries. Despite being relatively new to the ransomware landscape, Akira has maintained consistent operations throughout 2023 and into 2024, with law enforcement agencies including CISA and FBI issuing advisories about their activities, though no major disruption operations have been publicly reported against the group as of late 2024. The group has been linked to 1,704 public disclosures across our corpus. First observed on a leak site on April 26, 2023; most recent post August 25, 2026. The operation is currently active.

Also tracked as: Megazord.

Timeline of this disclosure

August 25, 2026WINTER Ingenieure listed by Akiraon the group's public leak site

Other recent disclosures by Akira

Akira has been linked to 1,704 public victims on Darkfield. A sample of the most recent:

See the full Akira dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,692 disclosures indexed across all operators we track. Geographically, WINTER Ingenieure is reported in Germany, a country with 383 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Akira means WINTER Ingenieure appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT-Bund (Germany), as required for your jurisdiction.
Monitor for the data appearing on Akira's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.