Was leonardo.com hit by ransomware?

leonardo.com was listed by the Threeam ransomware operation (Italy), 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 Threeam ransomware group?

Threeam 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 leonardo.com breach?

Threeam published data attributed to leonardo.com. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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leonardo.com

Claimed by Threeam · listed 1 year ago

16m

Age

since listed · data leaked

Status timeline

ListedFeb 13, 2025
Data leakeddate unknown

At a glance

Group: Threeam
Status: Data leaked
Country: Italy
Sector: Technology
Listed on leak site: Feb 13, 2025

About the victim

AI dossier — public-source company profile

Leonardo is a global aerospace, defence, and security company headquartered in Rome, Italy, founded in 1948. It designs and manufactures helicopters, combat systems, aeronautics platforms, cyber & security solutions, electronics, HPC systems, and space defence systems. The company is a major defence contractor serving government and military clients worldwide.

Industry: Aerospace, Defence & Security
Address: Rome, Italy
Founded: 1948

Attack summary

Severity: high — Leonardo is a critical defence contractor with access to sensitive military and government systems. Any confirmed breach of a company of this strategic importance—particularly one handling aerospace, defence electronics, and combat systems—represents a significant national security concern, even without explicit confirmation of data exfiltration in the available post.

The Threeam group claims to have attacked Leonardo and published data. No specific details about the nature of the breach (encryption vs. exfiltration), scope of data, or proof materials are provided in the available leak post excerpt.

high

What the group claims

Leonardo is a global aerospace, defense, and security company providing helicopters, security electronics, aeronautics, and space defense systems. The company was founded in 1948 and is headquartered in Rome, Italy.

Sources

Victim siteleonardo.com
Leak posthttp://threeamkelxicjsaf2czjyz2lc4q3ngqkxhhlexyfcp2o6raw4rphyad.onionpost.php?id=57

Source

Indexed 1 year 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 Threeam

Threeam is a financially motivated ransomware group that emerged in September 2023, operating as a relatively new player in the ransomware ecosystem with 64 documented victims across multiple countries and sectors. The group's origin and potential affiliations remain unclear due to limited public documentation from major security agencies, though their targeting patterns suggest a broad opportunistic approach rather than nation-state backing. Based on available victim data, Threeam appears to employ common initial access vectors targeting organizations across business services, healthcare, manufacturing, and technology sectors, with the United States, United Kingdom, Australia, France, and Brazil representing their primary geographic focus areas. While specific technical details about their encryption methods and extortion tactics have not been extensively documented by major threat intelligence firms, their emergence in late 2023 and victim count suggests they have established operational capabilities within the competitive ransomware landscape. The group's current operational status remains active based on the recency of their emergence, though detailed law enforcement actions or disruption efforts have not been publicly reported by CISA, FBI, or other major security organizations. The group has been linked to 85 public disclosures across our corpus. First observed on a leak site on September 14, 2023; most recent post June 12, 2026. The operation is currently inactive.

Timeline of this disclosure

February 13, 2025leonardo.com listed by Threeamon the group's public leak site

Other recent disclosures by Threeam

Threeam has been linked to 85 public victims on Darkfield. A sample of the most recent:

See the full Threeam dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,544 disclosures indexed across all operators we track. Geographically, leonardo.com is reported in Italy, a country with 635 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Threeam means leonardo.com 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, CSIRT Italia (Italy), as required for your jurisdiction.
Monitor for the data appearing on Threeam'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.