Was ACE Consulting Engineers hit by ransomware?

ACE Consulting Engineers was listed by the thegentlemen ransomware operation (Canada), 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 thegentlemen ransomware group?

thegentlemen 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 ACE Consulting Engineers breach?

thegentlemen published data attributed to ACE Consulting Engineers. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

ACE Moharram-Bakhoum (ACE Consulting Engineers)

listed as ACE Consulting Engineers · Claimed by Thegentlemen · listed 2 months ago

Age

since listed · data leaked

Status timeline

ListedApr 8, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Canada
Sector: Business Services
Listed on leak site: Apr 8, 2026

About the victim

AI dossier — public-source company profile

ACE Moharram-Bakhoum is a privately-owned international multidisciplinary engineering consultancy and project management firm founded in 1950. Operating in over 40 countries across the Middle East, Africa, Asia, and Eastern Europe, the firm delivers services spanning planning, architectural and engineering design, project management, and construction supervision. Its portfolio includes landmark mega-projects such as the Rod El-Farag cable-stayed bridge, Dubai Metro lines, and Julius Nyerere International Airport Terminal 3.

Industry: Multidisciplinary Engineering Consultancy & Project Management
Founded: 1950

Attack summary

Severity: high — Data has been published (not merely listed), indicating confirmed exfiltration from a large internationally operating engineering and infrastructure consultancy whose project portfolio spans critical infrastructure (bridges, metros, airports, wastewater treatment). Exposure of design, project management, or personnel data at this scale constitutes significant business and potentially sensitive infrastructure data disclosure.

The group 'thegentlemen' claims to have compromised ACE Consulting Engineers and has published data (disclosed status: data_published); no ransom amount or specific data volume has been stated, but the disclosure implies exfiltration of company data.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal company documents
Project files
Employee records
Business correspondence

What the group claims

ace-mb.com rocketreach.co/ace-consulting-engineers-moharrambakhoum-profile_b6a453d5c87891f3 CE Moharam Bakhoum is a privately-owned international multidisciplinary engineering consultancy and project management organization, founded in 1950. With over 70 years of experience, ACE has become one of the most accomplished and well-renowned companies worldwide. We operate primarily across the Middle East, Africa, Asia, and Eastern Europe and have an exceptional portfolio of mega-projects and award-winning designs in more than 35 countries. Our services span across the entire range of construction-related activities; planning, design, project management and construction supervision, to name a few

Sources

Victim siteace-mb.com

Source

Indexed 2 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 thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 483 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post June 11, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

April 8, 2026ACE Consulting Engineers listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 483 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen 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, ACE Consulting Engineers is reported in Canada, a country with 810 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means ACE Consulting Engineers 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 thegentlemen'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.