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colt.net

Claimed by Warlock · listed 1 year ago

1M documents
Records
11m
Age
since listed · data leaked

Status timeline

  1. ListedAug 17, 2025
  2. Data leakeddate unknown

At a glance

Group
Warlock
Status
Data leaked
Country
United Kingdom
Sector
Telecommunication
Listed on leak site
Aug 17, 2025
Records
1M documents

About the victim

AI dossier — public-source company profile

Colt Technology Services is a UK-based telecommunications and infrastructure provider offering global connectivity, dark fibre, and spectrum solutions. They position themselves as delivering secure, scalable network infrastructure for the AI and digital economy.

Industry
Telecommunications & Cloud Infrastructure

Attack summary

Severity: critical — A telecommunications infrastructure provider handling global connectivity, dark fibre, and spectrum services likely processes sensitive network configuration data, customer information, and potentially government/enterprise client details. Exfiltration of 1 million documents from such a critical infrastructure provider poses substantial risk to dependent organizations and national security interests.

The ransomware group claims to have exfiltrated approximately 1 million documents from Colt. The group indicates additional files are available for separate purchase, suggesting a tiered disclosure model typical of ransomware extortion.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Internal documents
  • Unspecified business records

What the group claims

1 million documents,The full set of files needs to be purchased separately.

Sources

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 warlock

Warlock is an emerging ransomware group that first appeared in June 2025, primarily motivated by financial gain through extortion operations targeting organizations across multiple sectors. The group's origin and potential affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their targeting pattern spans both Western nations and Russia, suggesting possible opportunistic rather than geopolitically-motivated operations. Based on available victim data, Warlock has demonstrated capability to compromise organizations across diverse sectors including technology, financial services, telecommunications, and healthcare, with their attack methodology and technical capabilities requiring further analysis by security researchers to establish definitive patterns regarding initial access vectors, encryption methods, or data exfiltration tactics. While the group has accumulated 78 documented victims across the United States, Japan, Russia, Great Britain, and Turkey within their initial months of operation, insufficient public reporting from CISA, FBI, or major security firms exists to detail specific notable campaigns, ransom demands, or high-profile incidents. Given the group's recent emergence in mid-2025, their current operational status and potential evolution remain under observation by the cybersecurity community. The group has been linked to 78 public disclosures across our corpus. First observed on a leak site on June 11, 2025; most recent post November 6, 2025. The operation is currently inactive.

Timeline of this disclosure

  • August 17, 2025colt.net listed by warlockon the group's public leak site
Records
1M documents

Other recent disclosures by warlock

warlock has been linked to 78 public victims on Darkfield. A sample of the most recent:

See the full warlock dossier →

Sector and geography

This disclosure adds to ransomware activity in the Telecommunication sector, which has 172 disclosures indexed across all operators we track. Geographically, colt.net is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.

If your organisation is affected

A listing by warlock means colt.net 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, NCSC (United Kingdom), as required for your jurisdiction.
  • Monitor for the data appearing on warlock'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.