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Siveco -

Claimed by Coinbasecartel · listed 3 months ago

2m
Age
since listed · data leaked

Status timeline

  1. ListedMay 30, 2026
  2. Data leakeddate unknown

At a glance

Group
Coinbasecartel
Status
Data leaked
Country
France
Sector
Technology
Listed on leak site
May 30, 2026

About the victim

AI dossier — public-source company profile

Siveco is a French software company specializing in computerized maintenance management systems (CMMS) and enterprise asset management (EAM) solutions. The company serves industrial clients across energy, transportation, manufacturing, and public utilities sectors in Europe, Africa, and Asia.

Industry
Enterprise Software – Computerized Maintenance Management Systems (CMMS) & Asset Management (EAM)

Attack summary

Severity: medium — Data has been published by the group (disclosed_status: data_published), indicating confirmed exfiltration. However, no details on data type, volume, or sensitivity are evident from the leak post excerpt, and no proof files/screenshots are quantified.

The coinbasecartel group claims to have compromised Siveco and published data. No specific detail on encryption status, exfiltration scope, or data types is provided in the available post excerpt.

medium

Original description

AI-summarised, not from the leak post

Siveco is a French software company specializing in computerized maintenance management systems (CMMS) and enterprise asset management (EAM) solutions. Founded in France, the company operates internationally, offering software and services to help organizations manage industrial maintenance, infrastructure, and assets. Its clients span sectors such as energy, transportation, manufacturing, and public utilities across Europe, Africa, and Asia.

Sources

Source

Indexed 3 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 coinbasecartel

CoinbaseCartel is a ransomware group that emerged in September 2025 with financially motivated operations targeting organizations across multiple sectors and geographic regions. The group has demonstrated significant activity in a short timeframe, compromising at least 102 known victims primarily across the United States, United Arab Emirates, Germany, Canada, and Brazil. Their targeting patterns show a preference for technology companies, financial services organizations, manufacturing entities, and consumer services businesses, suggesting an opportunistic approach focused on organizations likely to have both valuable data and the financial resources to pay ransoms. Given the group's recent emergence and limited public documentation from established threat intelligence sources, details regarding their specific attack methodologies, infrastructure, and organizational structure remain largely unconfirmed by major cybersecurity firms or law enforcement agencies. The group appears to maintain active operations as of late 2025, though comprehensive analysis of their tactics, techniques, and procedures awaits further investigation and reporting by established threat intelligence organizations. The group has been linked to 219 public disclosures across our corpus. First observed on a leak site on September 15, 2025; most recent post August 23, 2026. The operation is currently active.

Also tracked as: coinbase cartel.

Timeline of this disclosure

  • May 30, 2026Siveco - listed by coinbasecartelon the group's public leak site

Other recent disclosures by coinbasecartel

coinbasecartel has been linked to 219 public victims on Darkfield. A sample of the most recent:

See the full coinbasecartel dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,573 disclosures indexed across all operators we track. Geographically, Siveco - is reported in France, a country with 242 ransomware disclosures in our corpus.

If your organisation is affected

A listing by coinbasecartel means Siveco - 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 coinbasecartel'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.