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§ Private Profile · Palaiseau, Ile-de-France, France
Software vendor developing cyber-secured virtualization technology for enterprises, focused on IT consolidation and Confidential Computing.
Kerys Software, based in Palaiseau, France, develops cyber-secured virtualization technology that consolidates multiple isolated operating systems on a single machine with near-native performance. Its products, YS::Desktop and YS::Cloud, aim to reduce IT costs, enhance cybersecurity, and lower carbon footprints for large corporations across sectors such as defense, finance, and public administration. Kerys Software secured €6.2 million in pre-seed funding in July 2025, positioning itself as an emerging deep tech player. Recognized as a French Tech 2030 laureate in 2025, the firm focuses on optimizing hardware usage through its InfraTech offerings. The organization was founded in 2024 by Thomas Brethomé, Sébastien Domergue, and Sylvain Cassier, with Thomas Girard joining as CEO in early 2025. Its business model centers on venture-funded software vendor selling virtualization solutions to enterprises, raised €6.2M in pre-seed funding.
Kerys Software has raised $7.0M across 1 funding round.
Kerys Software has raised $7.0M in total across 1 funding round.
Kerys Software has raised $7.0M across 1 funding round. Most recently, it raised $7.0M Seed in June 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Jun 1, 2025 | $7M Seed | — | Backtrace Capital, Episode 1 Ventures, Essence VC, Motier Ventures, Pareto Holdings, Peak, Playfair Capital, Seedcamp, Bertrand Schmitt, Charlie Songhurst, Thibaud Elziere, Amirhossein Malekzadeh, Nicolas Steegmann, Sebastien Pahl, Shabir Vasram, Kima Ventures | Announced |
Kerys Software has raised $7.0M in total across 1 funding round.
Kerys Software's investors include backtrace capital, Episode 1 Ventures, Essence VC, Motier Ventures, Pareto Holdings, Peak, Playfair Capital, Seedcamp, Bertrand Schmitt, Charlie Songhurst, Thibaud Elziere, Amirhossein Malekzadeh.
KERYS Software is a French cybersecurity software company founded in 2023 or 2024, specializing in cyber-secured virtualization that delivers near-native performance to consolidate multiple isolated environments on a single machine.[1][2] It builds products like YS::Desktop, which replaces multiple laptops with one secure device, and YS::Cloud, which simplifies and secures cloud infrastructure using Confidential Computing-ready technology, targeting sectors such as defense, energy, finance, industrial, public administration, health, space, telecom, transportation, and research.[1][2][3] Serving enterprises needing optimized IT infrastructures, it solves problems like hardware sprawl, high costs, data security risks, network dependency in VDI/DaaS, shadow IT, and developer demands for full admin rights—while reducing IT's CO2eq footprint through greener hardware consolidation.[1][2][3][4] As a young startup, it shows early momentum via high-security certifications (CSPN, Common Criteria EAL5+) and a focus on environmental impact.[1]
KERYS Software emerged in 2023 (per some records) or 2024 (others), based in Palaiseau, France, as a mission-driven vendor addressing cybersecurity and sustainability in IT.[1][2] While specific founders are not detailed in available sources, an interview highlights Thomas Girard as a key figure representing the company, emphasizing its goal to cut carbon footprints by minimizing hardware purchases and usage.[4] The idea stems from flipping traditional virtualization flaws—like network outages causing shadow IT or productivity loss from device juggling—into local, secure, high-performance solutions that work offline with clean data purging and strict domain isolation.[3] Early traction includes targeting high-end sectors and securing top certifications, positioning it for defense and industrial adoption.[1]
KERYS Software rides the convergence of cybersecurity, edge computing, and sustainability trends, where enterprises demand secure, local virtualization amid rising cyber threats, remote work, and EU green regulations pushing IT carbon reduction.[1][2][4] Timing is ideal post-2023/2024 founding, aligning with Confidential Computing growth and hardware shortages, as market forces favor solutions cutting costs by 50-90% via consolidation while meeting EAL5+ standards for regulated sectors like defense and space.[1][3] It influences the ecosystem by enabling greener IT infrastructures, reducing e-waste, and promoting "safer, greener, faster" alternatives to cloud-heavy models, potentially accelerating adoption in Europe's sovereign tech push.[1][2]
KERYS Software is poised for scaling through partnerships in high-security sectors, leveraging its environmental edge to attract impact investors and government contracts amid tightening ESG mandates.[1][4] Trends like zero-trust architectures, AI-driven threats, and net-zero IT goals will propel demand for its local, certified virtualization, potentially expanding YS::Cloud into hybrid edge-cloud hybrids.[2][3] Its influence may evolve from niche vendor to key player in sustainable cybersecurity, consolidating hardware at enterprise scale—echoing its core promise of secure, green efficiency on a single machine.[1]