Was AECOM hit by ransomware?

AECOM was listed by the Metaencryptor ransomware operation (United States), 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 Metaencryptor ransomware group?

Metaencryptor 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 AECOM breach?

Metaencryptor published data attributed to AECOM. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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AECOM

Claimed by Metaencryptor · listed 5 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedSep 17, 2026
Data leakeddate unknown

At a glance

Group: Metaencryptor
Status: Data leaked
Country: United States
Sector: Professional Services
Listed on leak site: Sep 17, 2026

About the victim

AI dossier — public-source company profile

AECOM is a leading global infrastructure consulting and engineering company providing design, engineering, construction management, and advisory services. They serve public and private-sector clients across transportation, water, energy, buildings, environmental services, and government markets with operations worldwide.

Industry: Infrastructure Consulting & Engineering

Attack summary

Severity: medium — Claimed compromise of a major infrastructure consulting firm with potential access to sensitive client project data, but no files published yet and no operational disruption confirmed. Severity elevated from 'low' due to the critical nature of infrastructure sector and likelihood of sensitive project information, but without proof publication remains unconfirmed.

The metaencryptor group claims to have compromised AECOM but states that files for this campaign have not been published yet, indicating data exfiltration without current proof disclosure.

medium

What the group claims

AECOM is a leading U.S.-based global infrastructure consulting and engineering company. It provides design, engineering, construction management, and advisory services for major infrastructure projects across transportation, water, energy, buildings, environmental services, and government markets. AECOM operates worldwide and serves public- and private-sector clients.

The leak post

captured from the group's site

AECOM is a leading U.S.-based global infrastructure consulting and engineering company. It provides design, engineering, construction management, and advisory services for major infrastructure projects across transportation, water, energy, buildings, environmental services, and government markets. AECOM operates worldwide and serves public- and private-sector clients.
Files for this campaign have not been published yet.

Sources

Source

Indexed 5 hours 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 Metaencryptor

Metaencryptor is a relatively new ransomware group that emerged in August 2023, operating with primarily financial motivations and targeting organizations across multiple sectors and geographical regions. The group appears to be an independent operation rather than a Ransomware-as-a-Service model, though limited public documentation makes definitive attribution challenging regarding their specific country of origin or connections to established cybercriminal networks. Based on their targeting patterns, Metaencryptor demonstrates a preference for manufacturing organizations, business services, and transportation/logistics companies, with their operations concentrated primarily in Western nations including Germany, the United States, Canada, Spain, and the United Kingdom. With 31 documented victims since their emergence, the group represents a moderate but persistent threat in the ransomware landscape. However, due to their recent emergence and relatively lower profile compared to major ransomware families, comprehensive technical analysis of their attack methodologies, encryption techniques, and specific initial access vectors has not been extensively documented by major cybersecurity firms or government agencies. The group's current operational status remains active as of available intelligence, though the limited public reporting suggests they operate with a smaller scale and lower visibility than prominent ransomware-as-a-service operations that typically attract more attention from law enforcement and security researchers. The group has been linked to 47 public disclosures across our corpus. First observed on a leak site on August 16, 2023; most recent post September 17, 2026. The operation is currently inactive.

Timeline of this disclosure

September 17, 2026AECOM listed by Metaencryptor on the group's public leak site

Other recent disclosures by Metaencryptor

Metaencryptor has been linked to 47 public victims on Darkfield. A sample of the most recent:

See the full Metaencryptor dossier →

Sector and geography

This disclosure adds to ransomware activity in the Professional Services sector, which has 17 disclosures indexed across all operators we track. Geographically, AECOM is reported in United States, a country with 3,165 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Metaencryptor means AECOM 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, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on Metaencryptor'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.