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SBM & Co

Claimed by ALPHV/BlackCat · listed 2 years ago

28m
Age
since listed · data leaked

Status timeline

  1. ListedMar 1, 2024
  2. Data leakeddate unknown

At a glance

Group
ALPHV/BlackCat
Status
Data leaked
Country
United Kingdom
Listed on leak site
Mar 1, 2024

About the victim

AI dossier — public-source company profile

SBM Accountancy is a small accounting firm based in Twickenham, UK, established in 1993. They provide bookkeeping, tax advice, payroll, and business strategy services to small businesses, self-employed individuals, and specialized industries, with clients ranging from owner-managed businesses to London Stock Exchange-listed companies.

Industry
Accounting & Tax Advisory Services
Address
Twickenham, United Kingdom
Employees
5-10
Founded
1993

Attack summary

Severity: high — Accountancy firm breach affecting multiple clients' sensitive financial and tax data, including potentially regulated personal information. Data published by ransomware group indicates confirmed exfiltration. Scale and sensitivity of financial/tax records elevates severity despite lack of explicit proof count.

ALPHV/BlackCat claims to have compromised SBM Accountancy and exfiltrated data. The group has published the breach disclosure, but the leak post does not specify the attack method (encryption vs. exfiltration-only) or detailed data claims.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Client financial records
  • Tax returns and filings
  • Payroll information
  • Business accounting data
  • Personal client information

What the group claims

Established in 1993, we have many years of experience in assisting clients with accounting and taxation matters. We assist businesses and individuals as well as specialized industries. Our clients range from owner-managed businesses to those listed on the London Stock Exchange.

Sources

Source

Indexed 2 years 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 ALPHV/BlackCat

ALPHV, also known as BlackCat or Noberus, is a sophisticated ransomware-as-a-service operation that emerged in November 2021 and quickly became one of the most prolific ransomware groups globally, driven by financial motivations and responsible for compromising over 930 victims worldwide. The group is believed to be operated by Russian-speaking cybercriminals and represents an evolution of the BlackMatter ransomware operation, operating under a RaaS model that recruits experienced affiliates from other disbanded ransomware groups. ALPHV employs a multi-faceted attack methodology utilizing various initial access vectors including compromised Remote Desktop Protocol credentials, phishing campaigns, and exploitation of unpatched vulnerabilities, followed by deployment of their Rust-based ransomware payload that supports both Windows and Linux environments, while consistently employing double extortion tactics that involve data theft prior to encryption and threats to publish stolen information on their leak site. Notable campaigns include high-profile attacks against critical infrastructure and major corporations across healthcare, finance, and energy sectors, with the group demanding ransoms ranging from hundreds of thousands to millions of dollars, prompting the FBI and CISA to issue multiple advisories warning of their targeting of critical infrastructure organizations. As of early 2024, ALPHV remains active despite ongoing law enforcement efforts, continuing to evolve their tactics and maintain their position as one of the most significant ransomware threats globally. The group has been linked to 1,662 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post March 3, 2024. The operation is currently inactive.

Also tracked as: ALPHV, BlackCat, Noberus.

Timeline of this disclosure

  • March 1, 2024SBM & Co listed by ALPHV/BlackCaton the group's public leak site

Other recent disclosures by ALPHV/BlackCat

ALPHV/BlackCat has been linked to 1,662 public victims on Darkfield. A sample of the most recent:

See the full ALPHV/BlackCat dossier →

Sector and geography

Geographically, SBM & Co is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.

If your organisation is affected

A listing by ALPHV/BlackCat means SBM & Co 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 ALPHV/BlackCat'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.