Was Eiffage hit by ransomware?

Eiffage was listed by the lapsus$ ransomware operation (France), 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 lapsus$ ransomware group?

lapsus$ 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 Eiffage breach?

lapsus$ published data attributed to Eiffage. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Eiffage

Claimed by Lapsus$ · listed 5 months ago

Age

since listed · data leaked

Status timeline

ListedMar 1, 2026
Data leakeddate unknown

At a glance

Group: Lapsus$
Status: Data leaked
Country: France
Sector: Construction
Listed on leak site: Mar 1, 2026

About the victim

AI dossier — public-source company profile

Eiffage S.A. is a French publicly-listed construction and civil engineering group founded in 1993. Its operations span five segments: Construction, Infrastructure, Real Estate Development, Metal, and Concessions & Energy. The company operates in more than 50 countries and is known for major projects including work associated with the Eiffel Tower and the Millau Viaduct.

Industry: Civil Engineering & Construction
Employees: 10000+
Founded: 1993

Attack summary

Severity: medium — Data is reported as published by Lapsus$, suggesting confirmed exfiltration from a large multinational construction firm, but the leak post contains no specifics on data type, volume, or sensitivity, and the post content appears AI-generated with no verifiable proof files or data inventory listed.

Lapsus$ claims to have attacked Eiffage with a disclosed status of 'data_published', indicating data exfiltration has occurred; however, the leak post provides no specific details on the volume, nature of data stolen, or whether encryption was deployed.

medium

Original description

AI-summarised, not from the leak post

Eiffage S.A. is a French publicly-listed company established in 1993, specializing in civil engineering and construction. Its activities are divided into five main segments: Construction, Infrastructure, Real Estate Development, Metal, and Concessions & Energy. It is known for working on significant projects such as the Eiffel Tower and the Millau Viaduct. Eiffage operates not only in France but also in more than 50 countries worldwide.

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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About lapsus$

Lapsus$ is a financially motivated cybercriminal group that emerged in December 2021, gaining notoriety for their aggressive extortion tactics and high-profile targeting of major corporations and government entities. The group is believed to have originated from South America, particularly Brazil, with suspected ties to young hackers operating independently rather than as a traditional ransomware-as-a-service operation, though they have demonstrated sophisticated coordination and insider recruitment capabilities. Lapsus$ primarily relies on social engineering techniques, SIM swapping, and insider threats to gain initial access to target networks, often recruiting employees through bribes or coercion rather than relying on traditional malware delivery methods, and they frequently employ data theft and public leak tactics for extortion rather than always deploying encryption-based ransomware. The group has conducted notable attacks against major technology companies including Microsoft, Nvidia, Samsung, and Okta, as well as targeting organizations across France, the United States, Brazil, Germany, and Canada, with a particular focus on consumer services, education, government facilities, and critical manufacturing sectors, leading to significant law enforcement attention and arrests of suspected members. Following arrests of key members by Brazilian and UK authorities in 2022, the group's activity has significantly diminished, though some security researchers suggest remnants may still be operational under different identities. The group has been linked to 27 public disclosures across our corpus. First observed on a leak site on December 10, 2021; most recent post June 23, 2026. The operation is currently active.

Timeline of this disclosure

March 1, 2026Eiffage listed by lapsus$on the group's public leak site

Other recent disclosures by lapsus$

lapsus$ has been linked to 27 public victims on Darkfield. A sample of the most recent:

See the full lapsus$ dossier →

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 988 disclosures indexed across all operators we track. Geographically, Eiffage is reported in France, a country with 612 ransomware disclosures in our corpus.

If your organisation is affected

A listing by lapsus$ means Eiffage 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-FR (France), as required for your jurisdiction.
Monitor for the data appearing on lapsus$'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.