Was quantinuum.com hit by ransomware?

quantinuum.com was listed by the Ransomedvc 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 Ransomedvc ransomware group?

Ransomedvc 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 quantinuum.com breach?

Ransomedvc published data attributed to quantinuum.com. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Quantinuum

listed as quantinuum.com · Claimed by Ransomedvc · listed 3 years ago

34m

Age

since listed · data leaked

Status timeline

ListedSep 4, 2023
Data leakeddate unknown

At a glance

Group: Ransomedvc
Status: Data leaked
Country: United Kingdom
Sector: Technology
Listed on leak site: Sep 4, 2023

About the victim

AI dossier — public-source company profile

Quantinuum is the world's largest integrated quantum computing company, headquartered in the United Kingdom with operations in the United States. The company develops and commercialises quantum hardware (System Model H1, H2, and Helios), quantum software platforms (Nexus, InQuanto, TKET), and quantum security solutions (Quantum Origin QRNG). It serves commercial and research customers globally via on-premise and cloud-based access to its full-stack quantum computing systems.

Industry: Quantum Computing & Quantum Technology
Employees: 501-1000
Founded: 2021

Attack summary

Severity: critical — Quantinuum operates in quantum computing and quantum cryptography — a strategically sensitive dual-use technology sector with defence, intelligence, and critical infrastructure implications. Claimed access to databases and non-public documents at a company of this profile constitutes a potentially critical national-security-relevant breach involving proprietary research, cryptographic IP, and customer data.

RansomedVC claims to have gained access to everything on Quantinuum's servers, including databases and non-public documents, with the disclosure status marked as data_published, suggesting exfiltration of internal data.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Server databases
Non-public internal documents

What the group claims

we have access everything on their servers, including the Database, and other non public documents.

Sources

Victim sitequantinuum.com

Source

Indexed 3 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 Ransomedvc

Ransomedvc is a financially-motivated ransomware group that emerged in August 2023, representing one of the newer entrants in the ransomware ecosystem with a documented victim count of 68 organizations. Given the group's recent emergence and limited public documentation from major cybersecurity organizations, specific details about their country of origin and operational structure remain unclear, though their targeting patterns suggest they operate as an independent group rather than a established RaaS operation. The group demonstrates a preference for targeting critical infrastructure sectors, particularly focusing on Food & Agriculture and Healthcare organizations across a geographically diverse range of countries including Bulgaria, Brazil, Japan, Australia, and Russia, indicating either a broad opportunistic approach or the use of automated scanning tools to identify vulnerable systems. While comprehensive details about their specific attack methodologies, encryption techniques, and whether they employ double or triple extortion tactics have not been extensively documented by major threat intelligence firms, their targeting of healthcare and food sector organizations suggests they may leverage the critical nature of these services to pressure victims into payment. The group's notable campaign activity appears concentrated in their operational period since mid-2023, though no major high-profile attacks or significant law enforcement actions have been publicly reported by CISA, FBI, or other authoritative sources. Ransomedvc appears to remain active as of the latest available intelligence, though their relatively recent emergence means their long-term operational patterns and potential for rebranding or law enforcement disruption remain to be observed. The group has been linked to 68 public disclosures across our corpus. First observed on a leak site on August 21, 2023; most recent post October 30, 2023. The operation is currently inactive.

Timeline of this disclosure

September 4, 2023quantinuum.com listed by Ransomedvcon the group's public leak site

Other recent disclosures by Ransomedvc

Ransomedvc has been linked to 68 public victims on Darkfield. A sample of the most recent:

See the full Ransomedvc dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, quantinuum.com is reported in United Kingdom, a country with 1,217 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomedvc means quantinuum.com 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 Ransomedvc'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.