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Makesworth Accountants

Claimed by Ransomexx · listed 1 year ago

176.4 GB
Data size
16m
Age
since listed · data leaked

Status timeline

  1. ListedMar 4, 2025
  2. Data leakeddate unknown

At a glance

Group
Ransomexx
Status
Data leaked
Country
United Kingdom
Sector
Financial Services
Listed on leak site
Mar 4, 2025
Data size
176.4 GB

About the victim

AI dossier — public-source company profile

Makesworth Accountants is an award-winning chartered accountancy practice based in Harrow, UK. They provide accounting, taxation, and business advisory services to individuals, contractors, SMEs, and businesses across multiple sectors including healthcare, construction, and charities.

Industry
Accountancy & Tax Advisory Services
Address
Harrow, United Kingdom

Attack summary

Severity: critical — Accountancy firm holding sensitive financial, tax, and personal data for multiple clients. Exfiltration of 176.4 GB of data at scale, confirmed published disclosure. Likely contains regulated PII and financial information subject to GDPR and professional confidentiality obligations.

Ransomexx claims to have exfiltrated 176.4 GB of data from Makesworth Accountants. The group has published the data, indicating both encryption and data theft occurred.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • client financial records
  • tax documentation
  • payroll information
  • business accounting data
  • personal client information
  • business registration details

What the group claims

Makesworth Accountants is multi-award-winning accountancy practice of a chartered accountant, tax and business advisers. Leak size: 176.4GB.

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 Ransomexx

RansomEXX is a financially motivated ransomware operation that emerged in May 2020, targeting organizations across multiple sectors with a focus on extracting ransom payments through encryption and data theft tactics. The group is believed to operate independently rather than as a Ransomware-as-a-Service model, with suspected ties to Russian-speaking cybercriminals based on code analysis and operational patterns observed by security researchers. RansomEXX operators typically gain initial access through exploiting public-facing applications, particularly targeting vulnerable VPN appliances and remote desktop services, before deploying their custom ransomware payload which uses strong encryption algorithms and is often preceded by data exfiltration to enable double extortion schemes where stolen data is threatened to be publicly released if ransom demands are not met. The group has been responsible for several high-profile attacks including incidents against government entities and major corporations, with documented cases involving ransoms in the millions of dollars, though specific victim details are often kept confidential by affected organizations. Based on recent threat intelligence reporting, RansomEXX continues to maintain active operations as of 2024, with ongoing campaigns targeting the technology and healthcare sectors primarily in the United States and Europe. The group has been linked to 86 public disclosures across our corpus. First observed on a leak site on May 14, 2020; most recent post June 20, 2026. The operation is currently inactive.

Also tracked as: Ransom X, Defray777, Defray-777, Defray 2018.

Timeline of this disclosure

  • March 4, 2025Makesworth Accountants listed by Ransomexxon the group's public leak site
Data size
176.4 GB

Other recent disclosures by Ransomexx

Ransomexx has been linked to 86 public victims on Darkfield. A sample of the most recent:

See the full Ransomexx dossier →

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 1,184 disclosures indexed across all operators we track. Geographically, Makesworth Accountants is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomexx means Makesworth Accountants 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 Ransomexx'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.