Created in 2012 by theEuropean Union Agency for Cybersecurity (ENISA)THE European Cybersecurity Month (ECSM) aims to promote the culture of cybersecurity in all EU countries. Objective: better understand digital threats, strengthen protective reflexes and mobilize public and private stakeholders to raise awareness.
In France, this initiative is available under the name Cybermonthled by Cybermalveillance.gouv.fr. Every October, it invites businesses, institutions and citizens to become active links in digital protection, by sharing good practices and promoting innovative initiatives.
It is in this spirit that FRENCHWEB.FR devotes this special edition to 10 startups to follow in 2025chosen for their ability to rethink the foundations of cybersecurity in the era of artificial intelligence, automated compliance and digital sovereignty.
Whether they operate in active defense, compliance, or data protection, these European and Israeli startups embody the new generation of players who are shaping the future of digital security.
FILIGRAN wants to impose its open source model in European cybersecurity
Filigran, a young Parisian company founded in 2022 by Samuel Hassine and Julien Richard, is developing an open source decision-making cybersecurity software suite. Its platform helps businesses prioritize their risks with modules for threat intelligence, attack simulation and, soon, automated criticality analysis. Growing strongly, the company raised 50 million euros in October 2025 from Eurazeo and Deutsche Telekom Capital Partners, after a round of 35 million dollars in 2024 led by Insight Partners. Member of the French Tech Next40/120 program, Filigran has established itself as one of the most promising European players in decision-oriented cybersecurity.
TERRA SECURITY automates intrusion testing using artificial intelligence
Israeli start-up Terra Security is developing a continuous penetration testing platform powered by artificial intelligence. Its autonomous agents simulate large-scale attacks, adjust their actions in real time according to the context of each company and automatically trigger tests when a new vulnerability is detected. Founded in 2024 by Shahar Peled and Gal Malachi, the company has raised €36 million from Felicis, Dell Technologies Capital, SVCI, SYN Ventures, Lama Partners (FXP) and Underscore VC.
KOI reinvents endpoint security in the era of non-binary software
Israeli start-up Koi is developing an endpoint security platform capable of detecting and evaluating all types of software present on a terminal (binaries, containers, extensions or AI models) using an agentic AI engine that automatically identifies and blocks risky elements. It raised 48 million euros in series A led by Battery Ventures, with the participation of Team8, Picture Capital, NFX and Cerca Partners.
ONELEET automates cybersecurity with the eye of the attacker
Oneleet develops a compliance and cybersecurity platform designed from an offensive perspective. Its technology combines artificial intelligence and human expertise in an “AI + pentester verification” model, capable of identifying up to 30% more assets and vulnerabilities compared to traditional tools. Founded in 2022 by Bryan Onel, Ora Onel and Erik Vogelzang, the Amsterdam-based company raised €33 million in Series A from Dawn Capital, Y Combinator, Frank Slootman and Arash Ferdowsi.
DFNS Strengthens Digital Wallet Security with Advanced Cryptography
DFNS develops technology for securing digital wallets based on Multi-Party Computation (MPC), a cryptographic protocol that fragments private keys into several elements distributed across distinct environments, thus eliminating any single point of vulnerability. Its “Wallet-as-a-Service” solution makes it possible to manage complex transactions and operations via a multi-level API, integrating biometric authentication, passwords and secure recovery procedures without exposure of keys. Founded by Clarisse Hagège and Christopher Grilhault des Fontaines, DFNS has raised 15 million euros from Wintermute Ventures, White Star Capital, Susquehanna International Group (SIG), Semantic Ventures, Motive Partners and Motier Ventures.
SEKOIA automates cybersecurity to counter the rise of AI-driven threats
Sekoia develops a threat detection and response platform that automates monitoring and prioritization of alerts to reduce false positives and anticipate attacks, including those generated by artificial intelligence. Its suite includes Sekoia Defend and Sekoia Intelligence, two complementary products deployed with players such as EDF, Vinci, SNCF, NATO and the Council of Europe. Founded in France, the company raised 26 million euros in 2025 in a round led by Revaia, with the participation of Bright Pixel Capital, Omnes Capital, Bpifrance and Unexo, bringing the total raised since its creation to 71 million euros.
HUSH SECURITY wants to put an end to static API keys
Hush Security designs a security platform intended to eliminate the use of static API keys and secrets in software communications. Its technology is based on a “policy-based” approach, which grants applications and machines dynamic and temporary authorizations, only when they need them. Founded in 2024 by Micha Rave and the team behind Meta Networks (acquired by Proofpoint), the Israeli company raised 9 million euros in seed funding from Battery Ventures and YL Ventures.
SOLA SECURITY wants to make AI a co-pilot for cybersecurity teams
Sola Security is developing an artificial intelligence assistant designed to automate repetitive tasks and accelerate the creation of personalized defense solutions. Its Sola AI platform allows security teams to generate applications covering identity management, cloud security, compliance and system posture in minutes. Founded in 2024 by Guy Flechter and Ron Peled, the Israeli company raised 79 million euros from S32, M12, New Era Capital Partners, Mike Moritz, S Capital and Glilot Capital Partners.
NAQ automates health technology compliance
Naq is developing a compliance-as-code platform dedicated to digital health players, making it possible to continuously ensure compliance in terms of cybersecurity, confidentiality and clinical security. Coming from the British National Cyber Security Center accelerator, the solution is already used by more than 150 technologies deployed within the NHS and is now targeting international standards such as ISO 42001, SOC2 or HIPAA. Founded in 2020 by Nadia Kadhim and Chris Clinton, the company raised €6 million from Steyn Group-backed Automate Health.
ZAMA wants to make homomorphic encryption the basis of on-chain finance
Zama develops an open source full homomorphic encryption (FHE) infrastructure for running smart contracts on encrypted data without decrypting it. Its FHEVM technology makes native confidentiality possible on blockchain for uses such as asset tokenization, private portfolio management or confidential payments. Already used by more than 5,000 developers, the solution now displays performance 100 times higher than its initial version and relies on GPUs to achieve industrial scalability. Founded in 2024 by Rand Hindi and Pascal Paillier, the French company raised 57 million euros in Series B from Blockchange Ventures and Pantera Capital, bringing the total funds raised to 129 million euros and its valuation above a billion dollars.
