Was Blenheim hit by ransomware?

Blenheim was listed by the Spacebears 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 Spacebears ransomware group?

Spacebears 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 Blenheim breach?

Spacebears published data attributed to Blenheim. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Blenheim

Claimed by Spacebears · listed 9 days ago

Age

since listed · data leaked

Status timeline

ListedJul 6, 2026
Data leakeddate unknown

At a glance

Group: Spacebears
Status: Data leaked
Country: United Kingdom
Listed on leak site: Jul 6, 2026

About the victim

AI dossier — public-source company profile

Blenheim is a UK-based luxury property company operating across Sheffield, Yorkshire, Derbyshire, and the Peak District with over 20 years of experience. The company provides integrated services spanning property sales, acquisitions, architectural design, construction, and interior design for high-end residential real estate.

Industry: Luxury Property Development & Real Estate
Address: Sheffield, Yorkshire, Derbyshire, Peak District, UK

Attack summary

Severity: high — Confirmed exfiltration of 500 GB of sensitive business data including financial records, client PII (buyer details), architectural/planning documentation, and proprietary design materials. Financial and personal information at scale poses significant regulatory and reputational risk.

The spacebears group claims to have exfiltrated approximately 500 GB of data from Blenheim, including CRM databases, financial records, architectural drawings, CAD/BIM models, planning documentation, and complete buyer details with home layouts.

high

Data the group says was taken

AI dossier — extracted from the leak post

CRM database
Financial records
Architectural drawings
CAD/BIM models
Planning documentation
Buyer details with home layouts

What the group claims

Blenheim is a UK-based luxury property company specializing in high-end residential real estate, architecture, bespoke home design, and property development. With more than 20 years of experience, the company provides an end-to-end service covering property sales, acquisitions, architectural design, construction, and interior design. Operating across Sheffield, Yorkshire, Derbyshire, and the Peak District, Blenheim focuses on creating and marketing distinctive luxury homes tailored to each client's vision. Its multidisciplinary team combines expertise in real estate, architecture, and construction to deliver premium property solutions.Sell over 500 GB of data:- CRM database- Financial records- Architectural drawings, CAD/BIM models, and planning documentation.- Complete buyer details, including the home layout. https://***.co.uk

Sources

Victim siteblenheim.co.uk
Leak posthttp://5butbkrljkaorg5maepuca25oma7eiwo6a2rlhvkblb4v6mf3ki2ovid.onion/companies/55/blenheim

Source

Indexed 9 days 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 Spacebears

Spacebears is a recently emerged ransomware group first observed in April 2024, operating with apparent financial motivations and demonstrating a broad targeting approach across multiple sectors and geographic regions. The group's origin and potential affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their targeting pattern suggests a professional operation focused on maximizing financial returns rather than geopolitical objectives. With 117 known victims since their emergence, Spacebears has shown particular focus on organizations in the United States, Germany, Spain, Italy, and Canada, with their attacks primarily affecting technology, healthcare, manufacturing, and business services sectors, indicating they likely employ opportunistic targeting rather than sector-specific specialization. Their attack methodology, initial access vectors, and specific technical capabilities have not been extensively documented in public reporting from major cybersecurity firms or law enforcement agencies, limiting detailed analysis of their operational procedures and tools. Due to the group's recent emergence and limited public intelligence reporting, notable high-profile campaigns and specific victim details remain largely undocumented in established threat intelligence channels. The group's current operational status appears active given their recent emergence timeline, though comprehensive analysis is constrained by the lack of detailed public reporting from authoritative cybersecurity sources. The group has been linked to 185 public disclosures across our corpus. First observed on a leak site on April 29, 2024; most recent post July 13, 2026. The operation is currently active.

Also tracked as: space bears.

Timeline of this disclosure

July 6, 2026Blenheim listed by Spacebearson the group's public leak site

Other recent disclosures by Spacebears

Spacebears has been linked to 185 public victims on Darkfield. A sample of the most recent:

See the full Spacebears dossier →

Sector and geography

Geographically, Blenheim is reported in United Kingdom, a country with 373 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Spacebears means Blenheim 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 Spacebears'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.