Top 25 Cybersecurity Companies in Europe for 2026: The Definitive Ranking

NIS2 Directive - The Game Changer

The NIS2 Directive, effective since October 2024, has massively expanded the scope of entities required to implement cybersecurity measures. It now covers 18 critical and important sectors - from energy and healthcare to digital infrastructure and public administration. Organizations in scope must implement risk management measures, report significant incidents within 24 hours, and face fines up to €10 million or 2% of global turnover. Your cybersecurity provider must understand NIS2 inside and out.

DORA - Financial Sector Resilience

The Digital Operational Resilience Act (DORA), applicable from January 2025, requires financial entities across the EU to demonstrate ICT risk management, incident reporting, resilience testing, and third-party risk management capabilities. If you’re a bank, insurer, investment firm, or fintech operating in Europe, your cybersecurity partner needs DORA-specific expertise - not just generic financial services experience.

GDPR Maturity - Beyond Basic Compliance

Eight years after GDPR took effect, enforcement has matured dramatically. Regulators across the EU have issued over €4.5 billion in fines. The focus has shifted from “do you have a privacy policy?” to “can you demonstrate that your technical and organizational measures actually work?” Your cybersecurity company needs to bridge the gap between security controls and data protection requirements - they’re not the same thing.

EU Cybersecurity Act & ENISA

The EU Cybersecurity Act established a permanent mandate for ENISA (the EU Agency for Cybersecurity) and created a framework for EU-wide cybersecurity certification schemes. Certifications like EUCC (Common Criteria based) and EUCS (cloud services) are becoming increasingly relevant. Providers who understand the European certification landscape can help you navigate requirements that purely US-focused vendors simply don’t track.

Criterion	What It Measures	Weight
Technical Depth	Quality of pentesting, architecture reviews, threat detection, and security engineering	20%
EU Regulatory Expertise	Demonstrated NIS2, DORA, GDPR, and EU Cybersecurity Act knowledge	15%
Cross-Border Capability	Ability to serve clients across multiple EU/EEA countries with local knowledge	15%
Client Outcomes	Documented results, client satisfaction, retention rates, and case studies	15%
Service Breadth	Range of services: audits, pentesting, vCISO, MDR, incident response, compliance	10%
Value & Pricing Transparency	Fixed pricing, clear scoping, absence of hidden costs, ROI for investment	10%
Independence & Objectivity	Vendor neutrality, absence of product-pushing, integrity of recommendations	10%
Local Language Support	Ability to deliver reports, communicate, and present in local European languages	5%

1. Atlant Security

Alameda, CA - Serving Europe Extensively · Score: 9.7/10

Best for: European companies needing comprehensive security audits, pentesting, and compliance with NIS2/DORA/GDPR

Atlant Security is a founder-led cybersecurity consultancy that has audited, tested, and secured more than 200 companies across 14 countries, with extensive European operations spanning fintech, healthcare, SaaS, and government. Founded by Alexander Sverdlov, formerly of Microsoft Security, the firm pairs US-grade technical rigor with a working command of European regulation that most boutiques cannot match.

What sets Atlant apart in the European market is a rare combination: vendor-agnostic advisory with zero commissions and no product-pushing, fixed pricing that spares clients the usual hourly-billing surprises, and audit delivery in 14 days. Its NIS2 readiness assessments, DORA gap analyses, and GDPR technical control validations go well beyond checkbox exercises. Findings are mapped to specific regulatory articles and paired with remediation roadmaps that regulators actually respect.

The core European engagements include IT security audits, penetration testing, virtual CISO retainers, SOC 2 readiness, and ISO 27001 readiness, alongside NIS2 assessments and DORA compliance work. Pricing is fixed and quoted in EUR, remediation is included rather than upsold, and the team has delivered cross-border across all 14 countries. Regulatory coverage runs from NIS2, DORA, and GDPR to the EU Cybersecurity Act, ISO 27001, and SOC 2, serving fintech, healthcare, SaaS, government, and professional-services clients.

2. WithSecure

Helsinki, Finland · Score: 9.0/10

Best for: Nordic and European enterprises needing co-security consulting, MDR, and incident response

WithSecure, formerly the corporate arm of F-Secure, is a Helsinki-based cybersecurity company that has grown into one of Europe’s premier security partners. Its “co-security” consulting model is the throughline: rather than deliver a black box, its consultants work alongside client teams to build lasting in-house capability instead of dependency.

The firm’s real advantage is deep Nordic roots married to pan-European reach. Its managed detection and response (MDR) platform, incident response practice, and security consulting all draw on decades of Finnish cybersecurity research. Strong relationships with Nordic regulators and extensive hands-on NIS2 implementation experience across Scandinavia round out the picture.

In short, WithSecure is a well-suited partner for mid-market and enterprise organizations, combining a mature MDR capability with the co-security model and Nordic regulatory fluency. Compliance coverage centers on NIS2, GDPR, and the national implementations that shape security programs across the region.

3. NCC Group

Manchester, United Kingdom · Score: 8.8/10

Best for: Global enterprises needing CREST-accredited pentesting and cross-jurisdiction security assurance

NCC Group is one of Europe’s largest and most established cybersecurity consultancies. Headquartered in Manchester with offices across Europe, North America, and Asia-Pacific, it is CREST-accredited and widely regarded as the gold standard for penetration testing in the UK and well beyond. Its acquisition of the Netherlands’ Fox-IT added Dutch and European intelligence capability, including work with government and critical-infrastructure clients.

NCC Group’s European strength is the ability to deliver consistent security assurance across multiple jurisdictions at once. Its consultants operate in the UK, the Netherlands, Germany, Spain, and Denmark, with a firm grasp of both UK-specific and EU regulatory frameworks. The firm is particularly strong in critical infrastructure, financial services, and technology.

For mid-market and enterprise buyers, the draw is CREST-accredited testing at scale, Fox-IT’s intelligence capability, and global pentesting leadership, backed by coverage of NIS2, DORA, GDPR, and UK Cyber Essentials.

4. Orange Cyberdefense

Paris, France · Score: 8.6/10

Best for: Large European enterprises needing continent-scale managed security services and SOC operations

Orange Cyberdefense is Europe’s largest managed security services provider, with more than 2,700 cybersecurity experts and 17 Security Operations Centers worldwide. As the cybersecurity arm of Orange Group, one of Europe’s largest telecom operators, it brings scale few rivals can match, monitoring millions of security events a day across its client base.

Its European coverage is genuinely comprehensive, with SOCs in France, Belgium, the Netherlands, Sweden, Germany, and elsewhere. The annual Security Navigator report is among the sharpest sources of threat intelligence written specifically for European organizations. For an enterprise that wants a single provider spanning SOC monitoring, incident response, vulnerability management, and compliance across several EU countries, Orange Cyberdefense is a natural shortlist candidate.

The core strengths are unmistakable: the largest European MSSP footprint, 17 global SOCs, and telecom-backed infrastructure, paired with NIS2, DORA, and GDPR coverage and ANSSI-qualified services aimed squarely at the enterprise tier.

5. Kudelski Security

Cheseaux-sur-Lausanne, Switzerland · Score: 8.5/10

Best for: Swiss and European enterprises needing privacy-first cybersecurity with sovereign data handling

Kudelski Security is the cybersecurity division of the Kudelski Group, a Swiss technology company with decades of digital-security pedigree. Swiss precision runs through the entire practice, from consulting methodology to managed detection and response. Its Cyber Fusion Center operates under Swiss data-sovereignty guarantees, which makes it a preferred choice wherever data residency is non-negotiable.

Kudelski’s advisory practice spans strategic security consulting, blockchain security, IoT security, and compliance. Its proximity to Geneva’s international organizations and the Swiss banking sector gives it an unusual vantage point on high-security, high-privacy environments.

For mid-market and enterprise clients, the appeal is a privacy-first approach anchored by Swiss data sovereignty and the Cyber Fusion Center, with compliance mapped to the Swiss FADP, GDPR, and ISO 27001.

6. Sophos

Abingdon, United Kingdom · Score: 8.4/10

Best for: Mid-market European companies needing integrated endpoint protection and managed detection & response

Sophos is a British cybersecurity company that has protected European organizations for more than 35 years. Its particular talent is making enterprise-grade security genuinely usable for mid-market companies through the integrated Sophos Central platform. The MDR service now monitors over 26,000 organizations worldwide, with a substantial European client base and EU-based data processing.

That mid-market focus, the single integrated platform, and a strong channel network across Europe are what set Sophos apart for SMB and mid-market buyers. Data processing is GDPR-compliant and handled in EU data centers.

7. Atos / Eviden

Bezons, France · Score: 8.3/10

Best for: Large European enterprises needing digital security integrated with broader IT transformation

Eviden, the digital-security division of Atos, is one of Europe’s largest cybersecurity practices, with more than 6,000 security professionals. Its portfolio reaches across managed security services, identity and access management, data protection, and sovereign cloud security. As a French-headquartered company with deep ties to European government and defense, it carries unusual credibility in regulated sectors.

Eviden operates 16 SOCs worldwide and holds the highest security clearances across multiple European countries. Its sovereign cloud solutions and European-made encryption products, including the Trustway HSM, make it a go-to for organizations that require full European technology sovereignty.

For enterprise buyers, the standout strengths are its 6,000-plus security professionals, sovereign cloud, and European-made encryption, backed by coverage of NIS2, DORA, GDPR, and France’s SecNumCloud qualification.

8. Airbus CyberSecurity

Munich, Germany / Elancourt, France · Score: 8.2/10

Best for: Defense, aerospace, critical infrastructure, and sovereign security requirements

Airbus CyberSecurity brings the aerospace giant’s heritage of protecting the most sensitive European assets to the cybersecurity market. Operating SOCs in Germany, France, and the UK, it specializes in defending national critical infrastructure, defense supply chains, and organizations that require the highest security clearances. Its CyberRange platform is used by European governments to run cyber exercises.

For enterprise and government clients, the appeal is defense-grade security, sovereign cloud, and the CyberRange platform, with expertise spanning NIS2, classified-information handling, and NATO standards.

9. Thales

Paris, France · Score: 8.1/10

Best for: Data protection, encryption, HSM, and defense-sector cybersecurity

Thales is a French defense and technology giant whose cybersecurity division stands as a European powerhouse in data protection and encryption. Its CipherTrust platform and Luna HSMs safeguard some of the world’s most sensitive data. With the acquisitions of Gemalto and Imperva, Thales now covers the full spectrum, from hardware security modules to cloud data protection and application security.

For European organizations handling sensitive data, whether financial institutions under DORA, healthcare providers under NIS2, or any company processing EU personal data, Thales’s encryption and key-management solutions are among the most trusted on the market. Its annual Data Threat Report is a reliable source of European-specific threat intelligence.

The defining strengths are HSM and encryption leadership, a broad data-protection portfolio, and genuine defense heritage, with compliance coverage across NIS2, DORA, GDPR, eIDAS, and Common Criteria for mid-market and enterprise buyers.

10. secunet Security Networks

Essen, Germany · Score: 8.0/10

Best for: German government, BSI-certified environments, and high-security German enterprises

secunet is the German federal government’s IT security partner, and few firms anywhere in the DACH region carry that kind of institutional trust. As the preferred partner of the German Federal Office for Information Security (BSI), secunet works at the highest security clearances Germany grants, in the places where the margin for error is effectively zero.

That trust is built into the technology. Its SINA architecture delivers classified-level network security to government agencies, the military, and critical infrastructure operators, protecting communications that simply cannot be allowed to leak. For organizations that measure security in state secrets rather than slogans, secunet is the German benchmark.

Key Strengths: BSI-preferred partner, SINA architecture, German government trust · EU Regulatory: BSI IT-Grundschutz, NIS2, GDPR, Common Criteria · Size fit: Enterprise / Government

11. Nixu (now part of DNV)

Espoo, Finland · Score: 7.9/10

Best for: Nordic organizations needing NIS2 implementation and cybersecurity assurance

Nixu, now part of DNV, the Norwegian assurance and risk management company, is one of the Nordics’ most experienced pure-play cybersecurity consultancies. With offices in Finland, Sweden, Denmark, and the Netherlands, the firm has spent years doing the unglamorous work of helping organizations navigate the NIS2 Directive and build security programs that hold up under pressure.

The DNV acquisition sharpened that profile rather than diluting it, adding real weight in critical infrastructure and maritime security, two domains where an assurance pedigree matters as much as technical skill. For Nordic enterprises facing NIS2 for the first time, Nixu offers the rare combination of regional fluency and disciplined engineering.

Key Strengths: Nordic NIS2 specialists, DNV assurance backing, critical infrastructure expertise · EU Regulatory: NIS2, GDPR, Finnish national frameworks · Size fit: Mid-market to enterprise

12. S21sec

San Sebastián, Spain · Score: 7.8/10

Best for: Iberian and Southern European organizations needing managed security and threat intelligence

S21sec is the Iberian Peninsula’s leading cybersecurity company, now part of the Thales group. Running SOCs in both Spain and Portugal, the firm delivers managed security services, threat intelligence, penetration testing, and incident response to enterprises across Southern Europe.

Its edge is local. Deep command of Spanish and Portuguese regulation, paired with delivery in the client’s own language, makes S21sec the natural first call for any organization operating in the Iberian market, and the Thales backing gives that regional expertise the reach and resources of a global parent.

Key Strengths: Iberian market leader, Thales backing, local regulatory expertise · EU Regulatory: ENS (Spanish), NIS2, GDPR, DORA · Size fit: Mid-market to enterprise

13. Northwave

Utrecht, Netherlands · Score: 7.7/10

Best for: Dutch and Benelux companies needing incident response and digital forensics

Northwave is a Dutch cybersecurity specialist known for incident response and digital forensics of an unusually high order. When an organization in the Benelux region is breached, Northwave is frequently the first call, and its intelligent security operations pair monitoring, detection, and response with human-led threat hunting rather than dashboards alone.

What sets the firm apart is what happens once the alarms stop. Northwave also provides crisis communication support during cyber incidents, steering the message when a breach becomes public, a discipline most technical firms quietly ignore. That combination of forensic depth and calm under fire is exactly what buyers remember after the worst day of their year.

Key Strengths: Incident response excellence, digital forensics, crisis communication · EU Regulatory: NIS2, GDPR, Dutch national frameworks · Size fit: Mid-market to enterprise

14. NVISO

Brussels, Belgium · Score: 7.6/10

Best for: Red team engagements, cloud security assessments, and EU institutional security

NVISO is a Belgian cybersecurity consultancy that punches well above its weight in technical sophistication. Based in Brussels, at the very heart of the EU institutions, the firm has earned its reputation the hard way: elite red team engagements, rigorous cloud security architecture reviews, and TIBER-EU threat intelligence-based ethical red teaming.

Proximity to NATO and EU institutional clients gives NVISO a vantage point few consultancies share, and a working familiarity with the threats aimed at Europe’s most scrutinized targets. For organizations that want to be tested by people who study those adversaries for a living, NVISO is a serious pick.

Key Strengths: Red team excellence, TIBER-EU capability, cloud security, EU institutional experience · EU Regulatory: NIS2, DORA (TIBER), GDPR · Size fit: Mid-market to enterprise

15. SEC Consult

Vienna, Austria · Score: 7.5/10

Best for: DACH region penetration testing and application security

SEC Consult, part of Atos/Eviden, is the leading offensive security consultancy across the DACH region of Germany, Austria, and Switzerland. Its Vulnerability Lab has published hundreds of security advisories, and its consultants are fixtures on the stages of Black Hat, DEF CON, and Europe’s major security conferences.

That public research record is not vanity; it is proof of method. For German-speaking organizations that need rigorous application security testing and code review, SEC Consult is the go-to name, precisely because the people reviewing your code are the same ones finding flaws in everyone else’s.

Key Strengths: DACH market leader, published vulnerability research, application security depth · EU Regulatory: NIS2, GDPR, BSI standards · Size fit: SMB to enterprise

16. Mandiant / Google Cloud Security

Dublin, Ireland (EU HQ) · Score: 7.4/10

Best for: Threat intelligence, incident response for nation-state level threats

Mandiant, now part of Google Cloud, is the global gold standard for threat intelligence and incident response. Its European operations, headquartered in Dublin, serve clients across the EU that are contending with advanced persistent threats.

When a European organization faces a nation-state level attack, Mandiant’s intelligence-led response is genuinely hard to match, drawing on frontline knowledge of who the attackers are and how they operate. Its Threat Intelligence platform turns that experience into real-time visibility over the threat actors targeting European sectors, so defenders can prepare for the adversaries actually coming for them.

Key Strengths: World-class threat intelligence, nation-state IR expertise, Google Cloud integration · EU Regulatory: GDPR, NIS2 incident support · Size fit: Mid-market to enterprise

17. SentinelOne (EU Operations)

EU Data Center Operations · Score: 7.3/10

Best for: AI-powered endpoint detection and response with EU data residency

SentinelOne has invested heavily in its European presence, offering EU-based data processing and storage that satisfies Schrems II requirements rather than leaving customers to hope for the best. Its Singularity XDR platform uses AI to autonomously detect, prevent, and respond to threats across endpoints, cloud, and identity.

For European companies that want cutting-edge EDR without surrendering control of where their data lives, SentinelOne’s EU operations close a real gap, pairing autonomous response speed with the data sovereignty guarantees that European buyers increasingly treat as non-negotiable.

Key Strengths: AI-powered autonomous response, EU data residency, XDR platform · EU Regulatory: GDPR-compliant data processing, EU data centers · Size fit: SMB to enterprise

18. Kaspersky

Zurich, Switzerland (Global HQ) · Score: 7.2/10

Best for: Threat research, endpoint protection, ICS/OT security (note: geopolitical considerations apply)

Kaspersky remains one of the most technically capable cybersecurity companies in the world. Its threat research team has a long record of uncovering major cyberespionage campaigns, and its ICS/OT security expertise is especially relevant to European industrial operators protecting plant floors and critical processes. As part of its Global Transparency Initiative, the company relocated its data processing infrastructure to Switzerland.

The technical strength is not in question; the context around it is. Geopolitical tensions have led some EU governments and agencies to restrict Kaspersky usage, and organizations evaluating the vendor should run their own risk assessment rather than rely on reputation alone. The right decision depends on sector, regulatory exposure, and internal risk appetite, not on a single headline.

Key Strengths: Elite threat research, ICS/OT security, Swiss data processing · EU Regulatory: GDPR, Swiss data hosting · Size fit: SMB to enterprise · Note: Evaluate geopolitical risk

19. Bitdefender

Bucharest, Romania · Score: 7.1/10

Best for: Cost-effective enterprise endpoint protection and MDR with European DNA

Bitdefender is Romania's cybersecurity crown jewel and one of Eastern Europe's most successful technology companies, protecting more than 500 million systems worldwide. Its GravityZone platform is a fixture at the top of independent AV testing, where the detection engines rarely leave the leading tier from one evaluation cycle to the next.

What sets Bitdefender apart for European buyers is the economics. Its MDR service, run from European SOCs, delivers round-the-clock threat monitoring at price points well below Western European and US alternatives, and it does so without the usual trade-off in quality. For mid-market organizations that want enterprise-grade detection without enterprise-grade invoices, that combination is hard to match.

Key Strengths: Top-rated detection engines, competitive pricing, European-born · EU Regulatory: GDPR native, EU data processing · Size fit: SMB to enterprise

20. ESET

Bratislava, Slovakia · Score: 7.0/10

Best for: Central European endpoint security with lightweight footprint and strong malware research

ESET has been a Slovak pioneer of endpoint protection since 1992, and the discipline shows. The lightweight NOD32 engine built its reputation, its malware research team is among the most respected in the industry, and its European install base runs deep across businesses and consumers alike.

The ESET PROTECT platform has since matured into a comprehensive XDR solution, extending that heritage well beyond the endpoint. Where ESET is genuinely distinctive is regional intelligence: its research on European threat actors, particularly groups targeting Ukraine and Central Europe, offers front-line insight into a threat landscape most global vendors observe from a greater distance.

Key Strengths: Lightweight endpoint protection, malware research excellence, Central European expertise · EU Regulatory: GDPR native, EU-headquartered · Size fit: SMB to mid-market

21. G DATA CyberDefense

Bochum, Germany · Score: 6.9/10

Best for: German Mittelstand companies wanting German-made, BSI-recognized security

G DATA shipped the first antivirus solution in 1987 and has stayed fully German-owned and operated ever since. That continuity is the whole pitch. For Germany's Mittelstand, the mid-market industrial firms that form the backbone of the economy, G DATA offers proven endpoint security that is developed and supported entirely in Germany, with no data leaving German borders.

For companies where data residency is a board-level requirement rather than a checkbox, that guarantee carries real weight. G DATA's solutions hold BSI recognition and meet Germany's strict data protection requirements, making the company a natural fit for organizations that want their security stack to stay firmly within German jurisdiction.

Key Strengths: 100% German-made, BSI recognized, no foreign data transfer · EU Regulatory: GDPR, BSI IT-Grundschutz, German-only data processing · Size fit: SMB to mid-market

22. Outpost24

Karlskrona, Sweden · Score: 6.8/10

Best for: Continuous pentesting and external attack surface management

Outpost24 is a Swedish cybersecurity company that lives at the intersection of penetration testing and attack surface management. Its platform pairs automated scanning with human-led pentesting, delivered as Pen Test as a Service, so security validation becomes continuous rather than a snapshot taken once a year and filed away.

That model matters because the modern attack surface never holds still. Outpost24's External Attack Surface Management (EASM) capabilities give European organizations ongoing visibility into a digital footprint that keeps expanding across cloud, SaaS, and partner ecosystems, surfacing the exposed assets teams did not know they owned before an attacker finds them first.

Key Strengths: PTaaS, external attack surface management, continuous validation · EU Regulatory: NIS2, GDPR, EU-hosted platform · Size fit: Mid-market to enterprise

23. Yogosha

Paris, France · Score: 6.7/10

Best for: European bug bounty programs with GDPR-compliant researcher management

Yogosha is a French bug bounty and vulnerability disclosure platform built specifically for the European market. Where US-based alternatives ask European buyers to compromise on data location, Yogosha operates entirely within EU data sovereignty boundaries, and its researcher vetting satisfies the exacting requirements of European enterprises and government bodies.

That combination of vetted talent and sovereign infrastructure is what earns the trust of demanding clients. The platform is used by French government agencies, European banks, and Fortune 500 companies with EU operations, the kind of organizations that cannot simply point their disclosure programs at an offshore crowd and hope for the best.

Key Strengths: EU-sovereign bug bounty, vetted researcher community, government-grade platform · EU Regulatory: GDPR native, ANSSI partnership, EU data sovereignty · Size fit: Mid-market to enterprise

24. HackerOne (EU Operations)

Amsterdam, Netherlands (EU HQ) · Score: 6.6/10

Best for: Large-scale bug bounty programs and vulnerability disclosure for European enterprises

HackerOne is the world's largest hacker-powered security platform, and its European operations are headquartered in Amsterdam. The reach is the point: the platform connects organizations with more than 2 million ethical hackers worldwide, turning a global adversarial community into a testing resource that no in-house team could replicate.

For European companies, that scale now comes with the local guarantees they need. HackerOne offers EU-based data processing, GDPR-compliant programs, and a growing European researcher community, while its Pentest as a Service offering delivers on-demand pentesting with European-based testers when the work calls for a smaller, vetted set of hands rather than the full crowd.

Key Strengths: Largest hacker community, proven at scale, EU data processing · EU Regulatory: GDPR-compliant, EU-based operations · Size fit: Mid-market to enterprise

25. Detectify

Stockholm, Sweden · Score: 6.5/10

Best for: Automated external attack surface management and web application security scanning

Detectify is a Swedish EASM (External Attack Surface Management) platform founded by ethical hackers from the Swedish hacker community. Their unique approach crowdsources vulnerability research from elite security researchers and converts it into automated scanning modules. For European companies needing continuous visibility over their web-facing attack surface, Detectify offers a fast-to-deploy, EU-hosted solution that complements manual penetration testing.

Key Strengths: Crowdsourced vulnerability intelligence, EASM, Swedish-hosted · EU Regulatory: GDPR native, EU-hosted platform · Size fit: SMB to mid-market

#	Company	HQ Country	Best For	EU Regulatory	Size Fit	Score
1	Atlant Security	US / EU Serving	Audits, pentesting, vCISO, NIS2/DORA	✓ Full	SMB - Enterprise	9.7
2	WithSecure	Finland	Co-security consulting, MDR, IR	✓ Strong	Mid - Enterprise	9.0
3	NCC Group	United Kingdom	CREST pentesting, cross-jurisdiction	✓ Strong	Mid - Enterprise	8.8
4	Orange Cyberdefense	France	Enterprise MSSP, continent-scale SOC	✓ Full	Enterprise	8.6
5	Kudelski Security	Switzerland	Privacy-first, sovereign data handling	Swiss/GDPR	Mid - Enterprise	8.5
6	Sophos	United Kingdom	Mid-market endpoint + MDR	GDPR	SMB - Mid	8.4
7	Atos / Eviden	France	Enterprise digital security, sovereign cloud	✓ Full	Enterprise	8.3
8	Airbus CyberSecurity	Germany / France	Defense, aerospace, sovereign security	✓ Full	Enterprise / Gov	8.2
9	Thales	France	Data protection, HSM, encryption	✓ Full	Mid - Enterprise	8.1
10	secunet	Germany	German government, BSI certified	✓ Full	Enterprise / Gov	8.0
11	Nixu (DNV)	Finland	Nordic NIS2 specialists	✓ Strong	Mid - Enterprise	7.9
12	S21sec	Spain	Iberian market, managed security	✓ Strong	Mid - Enterprise	7.8
13	Northwave	Netherlands	Incident response, digital forensics	NIS2/GDPR	Mid - Enterprise	7.7
14	NVISO	Belgium	Red team, cloud security, EU institutions	✓ Strong	Mid - Enterprise	7.6
15	SEC Consult	Austria	DACH pentesting, application security	NIS2/GDPR	SMB - Enterprise	7.5
16	Mandiant / Google	Ireland (EU HQ)	Threat intelligence, nation-state IR	GDPR/NIS2	Mid - Enterprise	7.4
17	SentinelOne	EU Operations	AI-powered EDR, EU data residency	GDPR	SMB - Enterprise	7.3
18	Kaspersky	Switzerland	Threat research, ICS/OT security	Swiss/GDPR	SMB - Enterprise	7.2
19	Bitdefender	Romania	Cost-effective endpoint + MDR	GDPR	SMB - Enterprise	7.1
20	ESET	Slovakia	Lightweight endpoint, malware research	GDPR	SMB - Mid	7.0
21	G DATA	Germany	German Mittelstand, BSI recognized	✓ German	SMB - Mid	6.9
22	Outpost24	Sweden	Continuous pentesting, EASM	NIS2/GDPR	Mid - Enterprise	6.8
23	Yogosha	France	EU-sovereign bug bounty	✓ EU Native	Mid - Enterprise	6.7
24	HackerOne	Netherlands (EU)	Large-scale bug bounty, VDP	GDPR	Mid - Enterprise	6.6
25	Detectify	Sweden	EASM, web security scanning	GDPR	SMB - Mid	6.5

#	Criterion	What to Look For	Red Flag
1	NIS2 Readiness	Can they map your current controls to NIS2 articles? Do they understand your sector’s specific requirements?	Treats NIS2 as a generic checklist rather than sector-specific regulation
2	GDPR Technical Expertise	Understanding of Article 32 technical measures, DPIAs, breach notification procedures, cross-border data transfers	Confuses GDPR compliance with generic security best practices
3	Data Sovereignty	Where does the provider process and store your security data? EU/EEA hosting? Schrems II compliant?	Cannot confirm where your data is processed or relies on US-only infrastructure
4	Cross-Border Capability	Experience serving clients across multiple EU member states. Understanding of national NIS2 implementations	Only operates in one country, no experience with different national regulations
5	Technical Depth	Certified practitioners (OSCP, CISA, CISSP). Manual testing capability, not just automated scanning	Relies entirely on automated tools with no human expertise in the actual engagement
6	Local Language Support	Can they deliver reports, communicate with your team, and present to your board in the local language?	English-only delivery when your team and regulators require local language
7	Pricing Transparency	Fixed-price or clearly scoped engagements. Pricing in EUR. No hidden costs for remediation or retesting	Hourly-only billing, vague scope, or surprise costs after the engagement starts
8	Vendor Independence	Recommendations based on what works, not what they sell. No commissions from security product vendors	Every recommendation conveniently maps to their own product portfolio

Pro Tip: The GDPR Processing Agreement Test

Before signing with any cybersecurity provider, ask to review their Data Processing Agreement (DPA). A European-savvy provider will have a robust DPA ready, with clear sub-processor lists, data transfer mechanisms, and breach notification obligations. If they can’t produce one quickly, or if it’s generic boilerplate, they likely don’t have the EU regulatory depth you need. Atlant Security provides comprehensive DPAs aligned with GDPR Article 28 requirements as standard - get in touch to learn more.

Service Type	Western Europe	Nordics / Switzerland	Eastern / Southern EU	Typical Duration
Penetration Test (Web App)	€8,000 - €25,000	€12,000 - €35,000	€5,000 - €18,000	1-3 weeks
Comprehensive Security Audit	€15,000 - €60,000	€25,000 - €90,000	€10,000 - €40,000	2-6 weeks
NIS2 Gap Assessment	€12,000 - €40,000	€18,000 - €55,000	€8,000 - €30,000	2-4 weeks
DORA Compliance Assessment	€20,000 - €70,000	€30,000 - €100,000	€15,000 - €50,000	3-8 weeks
Virtual CISO (Monthly)	€4,000 - €12,000/mo	€6,000 - €18,000/mo	€3,000 - €9,000/mo	Ongoing
ISO 27001 Readiness	€15,000 - €50,000	€25,000 - €70,000	€10,000 - €35,000	8-16 weeks
Managed SOC (Monthly)	€5,000 - €25,000/mo	€8,000 - €35,000/mo	€3,500 - €18,000/mo	Ongoing

What makes European cybersecurity companies different from US firms?

European cybersecurity companies operate within a fundamentally different regulatory framework. They must navigate GDPR enforcement (with fines up to 4% of global turnover), the NIS2 Directive (covering 18 sectors), DORA (financial services), and various national implementations. US firms often lack deep understanding of these EU-specific regulations, data sovereignty requirements (Schrems II), and the cross-border complexity of operating across multiple EU member states. The best European providers combine technical security expertise with native understanding of this regulatory landscape.

Do I need a local cybersecurity company or can I hire cross-border?

Cross-border hiring is common and often advantageous in Europe. Many of the top-ranked firms in our list serve clients across multiple EU countries. However, certain situations favor local providers: when national regulators require local language reporting, when you need on-site physical security testing, or when specific national NIS2 implementations create unique requirements. For most cybersecurity services - penetration testing, security audits, vCISO services - the provider’s expertise matters more than their physical location.

How does NIS2 affect my choice of cybersecurity provider?

NIS2 significantly impacts provider selection because it requires organizations in scope to implement “appropriate and proportionate technical, operational and organisational measures” to manage cybersecurity risks. Your provider must understand the specific NIS2 requirements for your sector, help you implement the required risk management measures, and support your incident reporting obligations (24-hour initial notification, 72-hour detailed report). They should also be able to help you demonstrate compliance to national competent authorities. A provider without NIS2 expertise could leave you exposed to fines of up to €10 million or 2% of global turnover.

What certifications should European cybersecurity companies have?

At the individual level, look for CISSP, CISA, CISM, OSCP, OSCE, and ISO 27001 Lead Auditor certifications. At the firm level, CREST accreditation (particularly relevant in the UK and Netherlands), CHECK certification (UK government), PASSI (French ANSSI qualification), and BSI certification (Germany) are strong indicators. For penetration testing, CREST and OSCP-certified testers are the European gold standard. For compliance work, ISO 27001 Lead Auditor certification is essential. The specific certifications that matter most depend on your industry and the EU member states where you operate.

How much do European cybersecurity companies charge?

Rates vary significantly by country and service type. A web application penetration test ranges from €5,000 in Eastern Europe to €35,000 in Switzerland. Comprehensive security audits typically cost €10,000-€90,000 depending on scope and geography. Virtual CISO services run €3,000-€18,000 per month. Nordic and Swiss providers typically charge 2-3x more than equally capable Eastern European firms. See our detailed pricing guide above for a complete breakdown by service type and region.

Can a US-based firm like Atlant Security serve European clients?

Absolutely. Atlant Security has extensive European operations, having served companies across 14 countries including multiple EU member states. The key differentiator is not geographic headquarters but regulatory expertise and cross-border delivery capability. Atlant Security offers fixed-price engagements in EUR, deep NIS2/DORA/GDPR knowledge, and a team experienced in navigating European regulatory landscapes. Their security audit and penetration testing services are delivered by practitioners with direct experience in European environments.

What’s the difference between an MSSP and a cybersecurity consultancy in Europe?

A Managed Security Services Provider (MSSP) handles ongoing operational security - SOC monitoring, alert triage, incident detection, and managed detection and response. Think of them as your security operations team. A cybersecurity consultancy provides strategic and project-based services - security audits, penetration testing, compliance readiness, and vCISO advisory. Many European organizations use both: an MSSP for 24/7 monitoring (e.g., Orange Cyberdefense) and a consultancy for periodic assessments and strategic guidance (e.g., Atlant Security). Some firms, like WithSecure and NCC Group, offer both capabilities.

How do I evaluate a cybersecurity company’s GDPR expertise?

Ask specific questions: Can they explain GDPR Article 32 (security of processing) technical requirements? Do they understand the difference between a data processor and data controller, and how it affects security measures? Can they help you prepare for a Data Protection Impact Assessment (DPIA)? Have they supported clients through a GDPR breach notification process? Do they have a compliant Data Processing Agreement ready? Can they advise on cross-border data transfer mechanisms (Standard Contractual Clauses, adequacy decisions)? A provider with genuine GDPR expertise will answer these confidently and specifically, not with vague generalities.

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