Was Thames Valley Chamber of Commerce hit by ransomware?

Thames Valley Chamber of Commerce was listed by the worldleaks ransomware operation (United Kingdom), 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 worldleaks ransomware group?

worldleaks 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 Thames Valley Chamber of Commerce breach?

worldleaks published data attributed to Thames Valley Chamber of Commerce. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Thames Valley Chamber of Commerce

Claimed by Worldleaks · listed 4 months ago

Age

since listed · data leaked

Status timeline

ListedFeb 16, 2026
Data leakeddate unknown

At a glance

Group: Worldleaks
Status: Data leaked
Country: United Kingdom
Sector: Business Services
Listed on leak site: Feb 16, 2026

About the victim

AI dossier — public-source company profile

Thames Valley Chamber of Commerce (TVCC) is the largest and most influential business membership organisation in the Thames Valley region of the United Kingdom. It provides networking, business support, lobbying, international trade services, training, and policy representation for member businesses. The organisation also hosts major events such as the Thames Valley Growth Conference and administers business awards programmes.

Industry: Business Membership & Chamber of Commerce
Employees: 11-50

Attack summary

Severity: medium — Data is listed as published, indicating confirmed exfiltration rather than encryption-only; however, the leak post is AI-generated with no specific proof files, no stated data volume, and no confirmed presence of regulated personal or financial data at scale, warranting medium rather than high severity.

The worldleaks group claims to have published data belonging to Thames Valley Chamber of Commerce, with the disclosure status listed as data_published. The leak post appears AI-generated and does not specify whether encryption or exfiltration occurred, nor does it detail the volume or nature of the stolen data.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Member business records
Contact information
Organisational correspondence
Event and training records
International trade documentation

Original description

AI-summarised, not from the leak post

The Thames Valley Chamber of Commerce Group is a crucial networking, business support, and lobbying organization for businesses and organizations operating within the Thames Valley region in the United Kingdom. It aims to promote profitable business relationships among members and ensure sustainable economic growth in the region. This chamber hosts networking events, provides training and consultation, among various other services.

Sources

Source

Indexed 4 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 worldleaks

Based on the limited available data, worldleaks is a recently emerged ransomware group that was first observed in May 2025 and appears to be primarily financially motivated, having claimed 134 victims in a relatively short timeframe since its emergence. The group's origin and organizational structure remain unclear, with no publicly documented information from major cybersecurity firms or law enforcement agencies regarding their country of origin, potential affiliations, or operational model. Their targeting patterns indicate a focus on English-speaking countries, particularly the United States, United Kingdom, and Canada, with additional activity observed in Germany and Japan, while their sector targeting shows a preference for healthcare, technology, manufacturing, and consumer services organizations. Due to the group's recent emergence and limited public documentation by established threat intelligence sources, specific details about their attack methodologies, encryption techniques, extortion tactics, and notable campaigns have not yet been comprehensively analyzed or reported by organizations such as CISA, FBI, or major cybersecurity research firms. The group appears to remain active as of the most recent observations, though comprehensive threat intelligence profiling awaits further analysis and documentation by established cybersecurity authorities. The group has been linked to 167 public disclosures across our corpus. First observed on a leak site on May 18, 2025; most recent post June 11, 2026. The operation is currently active.

Timeline of this disclosure

February 16, 2026Thames Valley Chamber of Commerce listed by worldleakson the group's public leak site

Other recent disclosures by worldleaks

worldleaks has been linked to 167 public victims on Darkfield. A sample of the most recent:

See the full worldleaks dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,643 disclosures indexed across all operators we track. Geographically, Thames Valley Chamber of Commerce is reported in United Kingdom, a country with 902 ransomware disclosures in our corpus.

If your organisation is affected

A listing by worldleaks means Thames Valley Chamber of Commerce 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.
Monitor for the data appearing on worldleaks'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.