Was Merit Group hit by ransomware?

Merit Group was listed by the sinobi 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 sinobi ransomware group?

sinobi 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 Merit Group breach?

sinobi published data attributed to Merit Group. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Merit Group

Claimed by Sinobi · listed 5 months ago

Age

since listed · data leaked

Status timeline

ListedJan 14, 2026
Data leakeddate unknown

At a glance

Group: Sinobi
Status: Data leaked
Country: United Kingdom
Listed on leak site: Jan 14, 2026

About the victim

AI dossier — public-source company profile

Merit Group plc is a British publishing holding company listed on the Alternative Investment Market (AIM) of the London Stock Exchange. Formerly known as Huveaux plc (2001–2010) and then Dods Group plc (2010–2021), it specialises in political, parliamentary and public affairs intelligence and publishing. Its largest shareholder is Conservative politician and businessman Lord Michael Ashcroft.

Industry: Political & Parliamentary Publishing & Information Services
Founded: 2001

Attack summary

Severity: medium — Status is 'data_published', indicating confirmed data disclosure rather than a mere listing, but the leak post provides no detail on the type, volume, or sensitivity of exfiltrated data, preventing a higher classification.

The Sinobi ransomware group claims to have attacked Merit Group plc and has published data, though no specific data volume, encryption confirmation, or ransom demand is stated in the post.

medium

What the group claims

Merit Group plc is a British publishing holding company founded in 2001. Its largest shareholder is the Conservative politician and businessman Lord Michael Ashcroft. It was formerly known as Huveaux plc (from 2001 to 2010) and then as Dods Group plc (20102021). Its ordinary shares are listed on the Alternative Investment Market of the London Stock Exchange.

Sources

Leak posthttp://sinobi6ftrg27d6g4sjdt65malds6cfptlnjyw52rskakqjda6uvb7yd.onion/leaks/6963f8c26387a4c9a21c0f7a

Source

Indexed 5 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 sinobi

Based on the limited publicly available information, Sinobi appears to be a recently emerged ransomware operation first observed in July 2025, with financial motivations evidenced by their targeting of 268 victims across multiple sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reporting, and there is no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major security research organizations, though their targeting patterns suggest a broad opportunistic approach rather than highly selective operations. The group demonstrates a preference for targeting organizations in the United States, India, United Kingdom, Canada, and Italy, with a focus on manufacturing, healthcare, construction, and technology sectors, suggesting they may exploit common vulnerabilities across these industries rather than deploying sophisticated, sector-specific attack vectors. No major high-profile campaigns or significant law enforcement actions against Sinobi have been publicly reported by CISA, FBI, or established threat intelligence firms. Given the recent emergence timeline and lack of extensive public documentation, the group's current operational status and long-term trajectory remain unclear, though the substantial victim count suggests continued activity as of the last available reporting period. The group has been linked to 274 public disclosures across our corpus. First observed on a leak site on July 5, 2025; most recent post May 8, 2026. The operation is currently active.

Timeline of this disclosure

January 14, 2026Merit Group listed by sinobion the group's public leak site

Other recent disclosures by sinobi

sinobi has been linked to 274 public victims on Darkfield. A sample of the most recent:

See the full sinobi dossier →

Sector and geography

Geographically, Merit Group is reported in United Kingdom, a country with 902 ransomware disclosures in our corpus.

If your organisation is affected

A listing by sinobi means Merit Group 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 sinobi'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.