Cybersecurity startup ecosystem
With increasing regulatory pressure from NIS2 and GDPR enforcement, European cybersecurity startups are growing rapidly. Tallinn, London, and Tel Aviv-linked European teams lead in identity management, threat detection, and compliance automation. We track 214 organisations in this sector across 6+ countries.
Showing 141–160 of 214 Cybersecurity
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Nethone
Nethone is an AI-driven fraud-detection platform that profiles user sessions using thousands of behavioural, device and network signals to flag fraud in real time, helping online businesses and payment platforms make accurate accept/reject decisions. Acquired by Mangopay in 2022.
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NEVERHACK Estonia
NEVERHACK Estonia is a leading cybersecurity solutions provider headquartered in Tallinn, Estonia, with over 15 years of experience serving Estonian and regional markets. The company offers Security Operations Center (SOC) services, offensive security assessments, incident response, and security consulting to private and public sector organizations. As the Estonian arm of the NEVERHACK Group, it organizes and hosts the Nordic Baltic Security Summit, the region's premier annual cybersecurity conference.
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Nicole Eagan
Co-founder of Darktrace and its long-time CEO and later Chief Strategy Officer, helping pioneer the 'immune system' approach to enterprise cybersecurity using machine learning.
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Nineteen Group
UK-based exhibitions organiser behind International Cyber Expo and other security and emergency-services events at Olympia London. Nineteen Group builds large-scale trade shows that connect global suppliers, government officials and security leaders with technology buyers.
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Nord Security
Nord Security is a Vilnius-based cybersecurity company founded in 2012 that builds a family of privacy and security products including NordVPN, NordPass (password manager), NordLocker (encrypted file storage), and NordLayer (business network security). NordVPN is one of the most recognized consumer VPN brands globally with tens of millions of users. The company employs over 2,000 people and has grown into one of the highest-valued private technology companies in the Baltic region. Nord Security represents Lithuania's strongest global consumer cybersecurity brand and a major anchor of the Vilnius tech ecosystem.
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Nordic Baltic Security Summit 2026
A one-day summit focused on AI acceleration, digital dependency, and geopolitical risk, convening security leaders and tech vendors. A focused stage for security and defence founders selling into the Nordic-Baltic public and enterprise sector.
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Oh My Hack 2026
One of Poland's largest community cybersecurity conferences, returning for its 8th edition at the PGE Narodowy stadium. For security founders, pentesters, and infrastructure engineers it offers a large practitioner audience and a strong recruiting and networking surface in the Polish infosec scene.
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Omorika Ventures
Omorika Ventures is a Belgrade-based seed and early Series A fund launched in 2024 to address the shortage of institutional early-stage capital in Serbia and the broader Balkans. The fund secured €5 million in public co-funding through the Innovation Fund of Serbia's Serbia Ventures program and is operated by three founding partners with deep roots in the regional startup ecosystem via ICT Hub. It invests in tech companies with globally ambitious Serbian founders, providing capital alongside strategic support, mentorship, and international investor introductions. Portfolio companies include cybersecurity platform Trickest and HR-tech startup OneAssessment.
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Onum
Onum is a real-time telemetry-pipeline platform that ingests, enriches, filters and routes large volumes of security and observability data before it reaches a SIEM or data lake, cutting storage costs and speeding incident response. Acquired by CrowdStrike in 2025.
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Open Source Conference Luxembourg
Organiser of the Open Source Conference Luxembourg, a gathering of international Open Source Program Offices and related organisations. The conference exchanges experience on implementing and securing open-source software across the public sector, AI and large language models, cybersecurity, academia and humanitarian use.
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Open Source Conference Luxembourg 2026 (October 2026)
A one-day conference at the Belval campus themed around leading by example in digital sovereignty, gathering international Open Source Program Offices and related organisations. Participants exchange experience on implementing and securing open-source software across the public sector, AI and large language models, cybersecurity, academia and humanitarian use.
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Open Source Experience Brussels 2026
European-wide open-source business and technical conference in Brussels, bringing together 5,000+ OSS contributors, European corporate users of open source, and public-sector decision-makers. Program covers enterprise OSS strategy, supply-chain security, European digital sovereignty, and sustainable OSS funding models. Tickets EUR 200-500.
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Oplane
Agentic security platform that automates threat modelling for engineering teams using AI coding tools like Cursor and GitHub Copilot. Continuously maps codebase architecture, flags security risks and delivers contextual remediations in developer workflows; in production at Miro and Tandem Health.
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Outlast Fund
Outlast Fund is an early-stage venture capital firm co-headquartered in Riga and Stockholm, founded in 2024 by Egita Polanska, Marija Rucevska, Kristaps Prusis, and Mikaela Pedersen. The fund closed its debut €21 million vehicle backed by Latvian sovereign fund Altum, the EU's ERDF, and Baltic angel investors. It targets pre-seed tickets up to €250k and seed rounds up to €1.5 million, with a focus on B2B SaaS, fintech, and cybersecurity across the Baltics and Nordics.
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Overmind
Overmind provides a security and control layer for agentic AI deployments in enterprise systems. The platform supervises autonomous agent behavior in live workflows and intervenes when actions appear unsafe, adversarially influenced, or outside policy constraints.
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OxidOS Automotive
Builds a Rust-based secure operating system and toolchain for safety-critical automotive ECUs, aiming to cut development time while improving memory safety and security for car software.
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P101
Founded in 2013 by Andrea Di Camillo — a serial entrepreneur behind Vitaminic and Banzai and an early investor in Yoox and Venere — P101 is one of Italy's most prominent early-stage VC firms, managing approximately €500 million AUM. Its latest vehicle, Programma 103, closed at €250 million in early 2025, targeting early-stage startups in fintech, proptech, edtech, and cybersecurity with an average ticket of €5 million. Over 12 years P101 has backed 58+ companies and completed roughly 290 transactions with ~20 exits; standout portfolio names include Musixmatch (acquired by TPG for ~$500 million in 2023). The firm has a stated goal that Programma 103 companies will collectively generate €5 billion in revenue and 3,000+ jobs by 2030.
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Palsit d.o.o.
Palsit d.o.o. is a Slovenian company specializing in cybersecurity knowledge events and professional communities, based in Šempeter pri Gorici near Nova Gorica. The company organizes over nine annual conferences, most notably INFOSEK — Slovenia's largest information security conference — alongside ZEIDES, BIZTOPIX, CIO SUMMIT, and AiSEK. Palsit also operates professional clubs for IT professionals, ethical hackers, AI practitioners, and GDPR officers, collectively reaching over 2,130 participants per year with more than 320 speakers and 140 sponsors.
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Passbolt
Passbolt is a Luxembourg-based open-source password and secret-management platform built for security-conscious IT teams, from five-person companies up to organizations of 5,000. It is SOC 2 Type II audited, GDPR compliant, a member of the FIDO Alliance, and markets itself as 'Made in Europe'; its 50,000+ customers include government bodies, defence agencies and IT companies such as the French Interior Ministry and Bosch.
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Paweł Kastory
A veteran CEO (founder of DDB Warsaw marketing agency), Paweł became an active angel in his late career. He won Poland’s Business Angel of the Year 2020 for investing in and mentoring innovative startups. Notably, he was an early backer of retail AI platform Cosmose AI and has supported regtech and cybersecurity startups like ClauseMatch, Nethone, and BotGuard. Associated startups: Cosmose AI, ClauseMatch, Nethone, BotGuard.
