Was quantinuum.com hit by ransomware?

quantinuum.com was listed by the Incransom ransomware operation (United States), 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 Incransom ransomware group?

Incransom 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?

Incransom 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.com

Claimed by Incransom · listed 6 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedAug 1, 2026
Data leakeddate unknown

At a glance

Group: Incransom
Status: Data leaked
Country: United States
Sector: Technology
Listed on leak site: Aug 1, 2026

About the victim

AI dossier — public-source company profile

Quantinuum is a quantum computing company that develops integrated quantum computers, software platforms, and cybersecurity solutions. The company offers full-stack quantum technologies including hardware systems (Model H1, H2), cloud access, and specialized software (TKET, InQuanto, Nexus) serving enterprise and research customers across materials science, drug discovery, encryption, AI, and optimization.

Industry: Quantum Computing & Cybersecurity

Attack summary

Severity: high — Confirmed exfiltration of pre-IPO data from a publicly traded company with implications for investor disclosure and securities violations. Sensitive business and financial data at scale is at stake, with allegations of deliberate investor concealment heightening regulatory and reputational risk.

The incransom group claims to have exfiltrated data from Quantinuum in a pre-IPO breach. The group alleges the company deliberately withheld disclosure of the breach from investors, though the exact scope and nature of stolen data is not yet detailed in the leak post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Pre-IPO corporate data
Investor-related information

What the group claims

Quantinuum is a quantum computing company that develops advanced quantum computers, software, and cybersecurity solutions to solve complex scientific and industrial challenges. The company provides full-stack quantum technologies for areas such as materials science, drug discovery, encryption, artificial intelligence, and optimization, helping enterprises and researchers accelerate innovation through quantum computing. The leak dates back to pre-IPO. QUANTINUUM deliberately withheld this information from investors. The exact amount of stolen data will be revealed after publishing.

Sources

Source

Indexed 6 hours 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 Incransom

Incransom is a ransomware group that emerged in August 2023, operating with primarily financial motivations as evidenced by their targeting of high-value sectors across multiple developed nations. The group's origin and specific affiliations remain undocumented by major threat intelligence organizations, though their operational patterns suggest they likely operate independently rather than as a ransomware-as-a-service model. With 734 documented victims, Incransom has demonstrated a preference for targeting organizations in the United States, Canada, United Kingdom, Germany, and Australia, with particular focus on healthcare, technology, business services, and manufacturing sectors, though their attack methodology and specific technical capabilities have not been extensively documented by established security researchers or government agencies. The group's notable campaigns and specific high-profile victims have not been publicly detailed by CISA, FBI, Mandiant, or other reputable threat intelligence sources, suggesting either operational security effectiveness or limited visibility into their most significant operations. Based on available intelligence, Incransom appears to remain active as of recent reporting periods, though comprehensive analysis of their current operational status requires additional documentation from established threat intelligence sources. The group has been linked to 1,737 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post August 1, 2026. The operation is currently active.

Also tracked as: inc ransom, INC.

Timeline of this disclosure

August 1, 2026quantinuum.com listed by Incransomon the group's public leak site

Other recent disclosures by Incransom

Incransom has been linked to 1,737 public victims on Darkfield. A sample of the most recent:

See the full Incransom dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,563 disclosures indexed across all operators we track. Geographically, quantinuum.com is reported in United States, a country with 3,138 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Incransom 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, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on Incransom'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.