Was Hillmann Consulting hit by ransomware?

Hillmann Consulting 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 Hillmann Consulting breach?

Akira published data attributed to Hillmann Consulting (~116 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Hillmann Consulting

Claimed by Akira · listed 5 months ago

116 GB

Data size

Age

since listed · data leaked

Status timeline

ListedJan 29, 2026
Data leakeddate unknown

At a glance

Group: Akira
Status: Data leaked
Country: Germany
Sector: Business Services
Listed on leak site: Jan 29, 2026
Data size: 116 GB

About the victim

AI dossier — public-source company profile

Hillmann Consulting is a nationwide construction consulting and due diligence company based in Germany. The firm specialises in planning, managing, and executing construction projects, offering services including environmental health and safety, due diligence and remediation management, energy consulting, and construction services.

Industry: Construction Consulting & Due Diligence

Attack summary

Severity: critical — Confirmed exfiltration of regulated PII at scale (passports, SSNs, driver's licences for approximately 250 employees) combined with sensitive business data (financials, NDAs, HR files) totalling 116 GB, with data publication imminent.

Akira claims to have exfiltrated 116 GB of corporate data from Hillmann Consulting, including employee personal identity documents (driver's licences, passports, SSNs), contracts and agreements, financial records, HR files, confidential files, and NDAs, with publication of the data imminent.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Employee driver's licences (~250)
Passports
Social Security Numbers (SSNs)
Contracts and agreements
Financial records
HR files
Confidential files
NDAs

What the group claims

Hillmann Consulting is a nationwide construction consulting and d ue diligence company that specializes in planning, managing, and executing construction projects. They offer a wide range of servi ces including environmental health and safety, due diligence and remediation management, energy consulting, and construction servi ces. We will upload 116gb of corporate data soon. Employees' data (250 DLs, passports, SSNs and so on), contracts and agreements, fina ncials, HR files, confidential files, NDAs and so on.

Source

Indexed 5 months 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 1,648 public disclosures across our corpus. First observed on a leak site on April 26, 2023; most recent post June 12, 2026. The operation is currently active.

Also tracked as: Megazord.

Timeline of this disclosure

January 29, 2026Hillmann Consulting listed by Akiraon the group's public leak site

Data size: 116 GB

Other recent disclosures by Akira

Akira has been linked to 1,648 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 Business Services sector, which has 2,643 disclosures indexed across all operators we track. Geographically, Hillmann Consulting is reported in Germany, a country with 695 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Akira means Hillmann Consulting 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.
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.