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Listed on a ransomware leak site

quantinuum.com

quantinuum.com

quantinuum.com was listed on the INC Ransom and RansomedVC leak site on Sep 1, 2023. Brandefense has recorded 2 separate claims against it. Information as of Oct 19, 2026.

Updated continuously · figures as of Oct 19, 2026
Claimed by
INC Ransom, RansomedVC
First listed
Sep 1, 2023
Claims recorded
2

2 Leak-Site Claims.

INC RansomConfirmed claim
Posted on the leak site
Aug 1, 2026
Collected by Brandefense
Aug 1, 2026
Data claimed
Not stated
Leak-site post text, written by the group
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.
RansomedVCConfirmed claim
Posted on the leak site
Sep 1, 2023
Collected by Brandefense
Jul 11, 2025
Data claimed
Not stated

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.