Paris has steadily become one of Europe’s most important cybersecurity centers. As cyber threats grow more complex driven by cloud adoption, remote work, and artificial intelligence Paris-based startups are developing tools that move beyond traditional perimeter security. These companies focus on prevention, detection, and resilience, helping organizations protect data, infrastructure, and digital trust. Supported by France’s strong engineering talent, public investment in cyber defense, and a growing venture capital ecosystem, Paris is now home to cybersecurity startups competing on a global scale. Below are ten Paris-based cybersecurity companies that best reflect the city’s growing influence in digital security.
YesWeHack — Ethical Hacking at Scale
YesWeHack has become one of Europe’s most recognized bug bounty platforms. The company connects organizations with a global community of ethical hackers who identify vulnerabilities before criminals can exploit them. Governments, large enterprises, and public institutions rely on YesWeHack to strengthen security through responsible disclosure programs. Rather than relying solely on internal testing, the platform embraces collective intelligence an approach increasingly viewed as essential in modern cybersecurity.
GitGuardian — Preventing Sensitive Data Leaks in Code
GitGuardian focuses on a problem that affects nearly every modern organization: leaked secrets in source code. Its tools continuously scan repositories, cloud environments, and development pipelines to detect exposed API keys, credentials, and tokens. As software development accelerates, GitGuardian has positioned itself as a critical layer of security for DevOps and engineering teams, helping companies stop breaches before they begin.
HarfangLab — Sovereign Endpoint Security
HarfangLab provides endpoint detection and response (EDR) solutions designed for both public and private organizations. Its platform monitors devices in real time, identifying suspicious behavior and enabling rapid response to threats. The company places strong emphasis on transparency and digital sovereignty, making it particularly attractive to organizations with strict security and compliance requirements.
Filigran — Open-Source Threat Intelligence and Response
Filigran builds open-source cybersecurity tools that support threat intelligence sharing, incident response, and attack simulation. Its products are widely adopted by security teams looking for flexible, collaborative approaches to cyber defense. By embracing open ecosystems, Filigran demonstrates how transparency and community-driven development can strengthen security operations.
Neverhack — Cybersecurity Services with AI Assistance
Neverhack offers a range of cybersecurity services focused on protection, detection, and cyber training. The company integrates automation and AI-assisted tools to help organizations anticipate and respond to attacks more effectively. Its focus on cyber resilience reflects a broader industry shift: preparing organizations not just to prevent attacks, but to recover quickly when breaches occur.
Skyld — Securing Artificial Intelligence Models
Skyld addresses a rapidly emerging challenge: protecting AI models themselves. As organizations deploy machine learning in sensitive environments, models become valuable assets that can be stolen, manipulated, or reverse-engineered. Skyld’s cryptography-based approach helps secure AI systems against misuse, positioning the company at the intersection of cybersecurity and artificial intelligence governance.
Escape — API Security for Modern Applications
Escape specializes in API security, one of the fastest-growing attack surfaces in today’s digital infrastructure. Its platform analyzes application logic to uncover vulnerabilities that traditional security tools often miss. As APIs become the backbone of web and mobile services, Escape’s technology is increasingly relevant for companies building complex, interconnected platforms.
BonjourCyber — Cyber Protection for Small Businesses
BonjourCyber focuses on small and medium-sized enterprises, a segment frequently targeted by attackers but often lacking dedicated security teams. Its solution automates protection against phishing, ransomware, and common attack vectors. By simplifying cybersecurity for non-experts, BonjourCyber plays a key role in raising baseline security across the broader economy.
Sekoia.io — Unified Threat Detection and Response
Sekoia.io provides an extended detection and response (XDR) platform that centralizes threat intelligence, monitoring, and automated defense actions. The company helps security teams manage complex environments more efficiently through data correlation and automation. Its rapid growth highlights increasing demand for unified security operations platforms.
Giskard — Trust and Security for AI Systems
Giskard focuses on securing machine learning models by testing them for vulnerabilities, bias, and compliance risks. As AI systems influence critical decisions, ensuring their reliability and security has become a cybersecurity concern in its own right. Giskard’s work reflects a broader shift toward responsible and secure AI deployment.
Why Paris Is Emerging as a Cybersecurity Hub
Paris benefits from a rare combination of technical talent, public-private collaboration, and increasing investment in cyber defense. Initiatives supporting digital sovereignty, along with strong research institutions, have created fertile ground for cybersecurity innovation. As cyber threats continue to evolve, Paris-based startups are not only responding to today’s risks but shaping how organizations think about security in the years ahead.
