Skyld
Track on RadarProtects AI models from theft, extraction, and adversarial attacks.
- Total raised
- $1.76M
- Employees
- 11
- Founded
- 2023
- Momentum
- 32
Cooling
Data updated August 2026
About
About Skyld
At a glance
Skyld is a cybersecurity company specializing in AI Security, founded in 2023 and headquartered in Rennes, France. It has raised $1.76M in total funding, employs about 11 people, and is privately held.
Skyld is a deeptech startup founded in July 2023 by Marie Paindavoine, a cryptography PhD with over ten years of cybersecurity experience. The company develops security solutions specifically designed to protect artificial intelligence models from sophisticated attacks including theft, reverse engineering, model extraction, and adversarial examples. The company addresses the security challenges that arise when AI models are deployed in unsecured environments across critical sectors such as energy, healthcare, defense, mobility, and industry. Skyld's approach focuses on ensuring the integrity, confidentiality, and monetization control of AI models. The founder's background includes expertise in homomorphic encryption, an advanced technology that enables computations on encrypted data, which is relevant to Privacy Preserving Machine Learning. Skyld operates on the principle of "AI security by design," recognizing that traditional cybersecurity protections are insufficient against attacks targeting AI systems. The company invests 85% of its budget in research and development. Skyld has been supported by Inria Startup Studio and accelerated by Berkeley SkyDeck. The company raised €1.5 million in its first funding round in October 2025, backed by French and Swiss investors including Auriga Partners, Axeleo Capital, and Verve Ventures. The startup has received recognition in the European cybersecurity ecosystem, including winning the Access-2-Finance Award at European Cyber Week 2023 and reaching the finals of the ECSO Startup Award 2024 among the 12 most promising cybersecurity startups in Europe.
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FAQ
Frequently asked questions about Skyld
When was Skyld founded?▾
Skyld was founded in 2023.
Where is Skyld headquartered?▾
Skyld is headquartered in Rennes, France.
How much funding has Skyld raised?▾
Skyld has raised a total of $1.76M in total funding.
Is Skyld public or private?▾
Skyld is a privately-held company.
How many employees does Skyld have?▾
Skyld has approximately 11 employees.
What does Skyld do?▾
Skyld is a deeptech startup founded in July 2023 by Marie Paindavoine, a cryptography PhD with over ten years of cybersecurity experience. The company develops security solutions specifically designed to protect artificial intelligence models from sophisticated attacks including theft, reverse engin…