5 Best NIS2 Compliance Companies: Become NIS2 Compliant with Ease

Gauss Development

Gauss started as a web solutions agency and evolved into a full-service software and digital transformation partner for European enterprises. Our continuous innovation culture and commitment to quality have positioned us as an agile, EU-based alternative to larger consultancies in the cybersecurity governance and NIS2 readiness space.

NIS2 Approach

We view NIS2 compliance as a natural extension of our quality-driven development philosophy, integrating it into everyday operations rather than treating it as a one-time audit exercise. Our methodology begins with risk-based gap analysis, then layers NIS2 governance and technical controls onto your existing processes. This embeds policy workflows, asset inventories, and incident-reporting channels into your operational framework, making compliance a living process.

Core Offerings

NIS2 Readiness & Gap Assessment: Workshops and evidence reviews that map your current controls to NIS2 articles, delivering a prioritized remediation plan.

Comprehensive Compliance Framework: Policy lifecycle management, asset/risk registers, and 24-hour incident notification aligned with NIS2 timelines.

Managed Security & Advisory: Ongoing vulnerability scanning, policy maintenance, and board-level reporting supported by our ISO-certified consultants.

Standout Features

Our approach integrates compliance into your everyday operations rather than treating it as a separate function. With around 60 staff members, you work directly with our senior engineers for personalized guidance without the overhead of a global integrator. Our quality culture is proven through triple-ISO certification and multiple AAA credit-rating awards, with recognition through Deloitte Fast 50 listings and Clutch 5-star status demonstrating market trust.

Implementation Process

We follow a three-phase model: a 2-3 week "Discover" phase involving workshops and baseline scans, a 1-3 month "Remediate" phase implementing control roll-outs and staff training, and a "Sustain" phase with quarterly health checks and KPI dashboards. Our approach ensures continuous improvement to help you adapt to regulatory updates.

Best Suited For

We work particularly well with mid-sized enterprises and public-sector organizations in Central & South-East Europe looking for an integrated software-plus-consulting partner. Organizations facing NIS2 obligations will find our practical implementation expertise especially valuable.

Success Indicator

Our successful 2022 launch of Celero One's cloud workforce-management suite met stringent German data-security requirements, demonstrating our compliance expertise. Clients typically report faster audit preparation and clearer management oversight after implementing our comprehensive compliance approach.

OneTrust

OneTrust is a leading software company in the privacy, security, and governance space, providing an integrated platform to help organizations manage complex compliance requirements. Their rapid rise from GDPR-era prominence has evolved into a comprehensive governance, risk, and compliance solution portfolio that brings extensive experience in automating and scaling compliance efforts.

NIS2 Approach

OneTrust takes a holistic approach that integrates NIS2 into broader risk and compliance strategy, mapping requirements onto existing cybersecurity frameworks and controls. They emphasize automation and continuous monitoring, using software to streamline control implementation, evidence collection, and reporting. Their approach ensures NIS2 compliance becomes an ongoing process that adapts as regulations evolve, supported by rich regulatory intelligence from in-house legal researchers.

Core Offerings

Compliance Automation Platform: Out-of-the-box NIS2 framework content and control mappings that help quickly assess your current posture, with task lists to address compliance gaps and pre-mapped controls replacing manual processes.

Regulatory Insight & Tracking (DataGuidance): Up-to-date analysis of NIS2 across jurisdictions with access to a NIS2 Directive tracker and insights from 2,000+ legal and regulatory experts monitoring implementation throughout the EU.

Third-Party Risk Management: Tools to assess and mitigate vendor risks through data collection, security questionnaires, and continuous monitoring, creating a more secure supply chain that fulfills NIS2 obligations.

Standout Features

OneTrust stands out for bringing together privacy, IT security, third-party risk, ethics, and ESG compliance in a single dashboard—valuable for NIS2 since the directive intersects with multiple domains. Their vast repository of regulatory content, with analysts covering over 300 jurisdictions, ensures you always have the latest guidance on NIS2 and related laws. The platform's user-friendly automation reduces the manual workload of compliance while positioning compliance as building resilient, trustworthy operations.

Implementation Process

Implementation typically begins with scoping sessions to identify applicable NIS2 requirements and structure your workspace. Thanks to pre-built templates and controls, initial setup often takes weeks, with full compliance remediation extending a few additional months depending on gaps. The platform then transitions to continuous monitoring mode, with dashboards showing progress and flagging regulatory updates.

Best Suited For

OneTrust works best for medium to large organizations that need to manage compliance at scale and want to unify NIS2 with broader governance programs. The solution is especially valuable for technology, finance, healthcare, and energy sectors with high regulatory complexity and the need to demonstrate strong controls.

Success Indicator

OneTrust's effectiveness is demonstrated by its explosive growth—ranked the #1 fastest-growing private company on the Inc. 500 with 48,000% three-year growth rate. Their achievement of 10,000 customers in five years, including 75% of the Fortune 100, indicates that even the world's largest organizations trust OneTrust for compliance needs.

Eviden

Eviden is a global digital transformation and cybersecurity company formed as a subsidiary of the Atos Group in 2023, consolidating digital, cloud, big data, and security services. Their extensive resources and European cybersecurity pedigree position them as part of Europe's #1 cybersecurity provider, with deep expertise serving critical industries and large-scale projects.

NIS2 Approach

Eviden approaches NIS2 compliance with a focus on proactive risk management and tailored advisory, supported by broad technology capabilities. They begin by determining if your organization falls under NIS2 and its classification, then conduct thorough gap analysis against requirements. What distinguishes them is their blend of consulting and implementation—they not only provide roadmaps but also execute them using their cybersecurity products, approaching NIS2 as a lifecycle (assess → improve → monitor).

Core Offerings

NIS2 Scope & Gap Assessment: Applicability review and detailed compliance gap analysis of your security governance, controls, and incident processes, producing a risk-rated report of non-compliance areas.

Remediation Roadmap & Implementation Support: Customized remediation with clear milestones, policy updates, security technologies, and incident response plans using their cybersecurity product suite for end-to-end implementation.

Managed Compliance & Continuous Monitoring: Ongoing services including real-time risk monitoring through their security operations center, periodic compliance audits, and regular training sessions for sustained compliance without maintaining a large internal team.

Standout Features

Eviden stands out for the sheer breadth and scale of their NIS2 solutions, drawing on tens of thousands of experts and a portfolio spanning consulting to hardware security appliances. Their successful modernization of cybersecurity across 22 NATO locations demonstrates their ability to execute complex, high-stakes assignments. They differentiate through innovation, leveraging AI and advanced analytics in security products, while their Europe-based expertise provides nuanced understanding of the NIS2 regulatory environment with formal certifications from authorities like France's ANSSI.

Implementation Process

Implementation follows well-defined phases scaled to your organization's complexity, beginning with assessment (NIS2 Quick Scan and detailed analysis) and moving to remediation with project governance and parallel workstreams. Organizations typically achieve substantial compliance within 3-6 months, especially when leveraging Eviden's pre-configured tools, with ongoing support through managed services and periodic reassessments.

Best Suited For

Eviden's services work best for large enterprises and critical sector organizations requiring comprehensive NIS2 compliance support, particularly those with complex, heterogeneous IT environments. Organizations lacking internal resources to tackle NIS2's demands benefit from their turnkey solution approach, especially those wanting a partner that understands European regulatory intricacies.

Success Indicator

Their work with NATO—completing a major project to secure critical systems at 22 sites—demonstrates their ability to deliver under stringent requirements. Their scale of operations, with approximately 57,000 employees and billions in revenue, supports numerous Fortune 500 companies and public institutions, while industry recognition and long-term client engagements validate their effectiveness.

Holm Security

Holm Security is a Swedish cybersecurity company specializing in next-generation vulnerability management with a local presence in multiple countries. Their focus on continuously identifying and remediating security weaknesses enables them to address many NIS2 technical requirements through their platform-driven approach.

NIS2 Approach

Holm tackles NIS2 compliance through automation and continuous assessment, transforming periodic manual checks into automated vulnerability assessments. They emphasize management oversight with easy-to-understand metrics for real-time risk monitoring, while integrating security awareness training for NIS2's employee requirements. Their "platform-ized" approach uses a unified tool to cover technical scanning, reporting, and training, simplifying compliance for organizations without large security teams.

Core Offerings

Vulnerability Management Platform: Automated, continuous risk assessments across your IT assets, scanning servers, networks, web applications, and cloud services to address NIS2's risk analysis and cyber hygiene requirements.

Phishing Simulation & Awareness Training: Realistic phishing tests with automated enrollment in training sessions, improving your human security element while documenting compliance with NIS2's staff awareness requirements.

Compliance Reporting & Supply Chain Support: Unlimited archive of reports and vulnerability data for auditor evidence, plus multi-entity assessments allowing suppliers to participate in vulnerability scans under your setup.

Standout Features

Holm's approach stands out for being product-driven and highly automated, delivering a live system where compliance status updates continuously. Their focus on user-friendliness makes the platform accessible to resource-constrained IT teams, with straightforward integration and clear dashboards for both technical staff and executives. The platform scales from small networks to tens of thousands of assets, serving organizations of various sizes cost-effectively while incorporating innovative features like Attack Surface Management.

Implementation Process

Implementation begins with workshops to identify assets and scope, followed by deploying scanning sensors in your environment, often within days. After receiving your initial risk overview within the first week, Holm assists with fine-tuning the system and provides training, with typical platform onboarding taking just a couple of weeks for full coverage, transitioning to ongoing support with regular review meetings.

Best Suited For

Holm Security works best for small to mid-sized organizations and entities preferring a software-driven approach to NIS2 compliance, particularly government agencies, educational institutions, and companies without large security departments. Organizations seeking rapid results for upcoming audits or wanting to build continuous security practices will find their solution especially valuable.

Success Indicator

Holm has helped hundreds of organizations throughout the EU comply with NIS directives, with clients returning for NIS2 after seeing improved security postures and smoother audits with the original NIS. Their growing customer base of 750+ organizations, including many public sector clients directly impacted by NIS2, demonstrates their solution's alignment with compliance needs and budget realities.

Kroll

Kroll is a veteran risk management firm evolved into a global leader in cybersecurity and compliance advisory, operating in 30+ countries. Their dual strengths in strategic consulting and hands-on incident response provide unique perspective on both boardroom concerns and technical realities, positioning them to help companies not only comply with NIS2 but effectively handle cyber threats.

NIS2 Approach

Kroll approaches NIS2 compliance as building robust cyber governance backed by operational readiness, embedding cybersecurity into organizational decision-making and culture. Their methodology begins with gap and risk assessment against NIS2 requirements and frameworks like ISO 27001, followed by practical remediation with clear responsibility assignments. They take a risk-based approach prioritized to your specific threat landscape while integrating incident response preparedness, including tabletop exercises and pre-defined breach reporting processes.

Core Offerings

NIS2 Compliance Gap Assessment: Comprehensive review of governance structure, cyber risk management practices, and incident handling capabilities, producing a detailed report with quantitative measurements and risk ratings.

Remediation Roadmap & Implementation Advisory: Development and implementation support for remediation plans, including policy drafting, incident response improvements, simulations, and third-party risk management setup.

Cyber Risk Retainer & Ongoing Support: Flexible hours/credits for periodic compliance audits, training, and consultancy, with prioritized incident response support from their elite Digital Forensics team and access to services like penetration testing.

Standout Features

Kroll's services stand out through their deep investigative heritage and incident response expertise, with team members including former law enforcement specialists who bring real-world incident experience to compliance consulting. Their global reach combined with local understanding allows them to navigate multi-country compliance efforts seamlessly. Extensive credentialing (PCI QSA, PFI, CREST) builds trust, while their flexible engagement models and integration of multiple risk disciplines (cybersecurity, fraud, crisis management) provide comprehensive perspective.

Implementation Process

Implementation follows well-defined stages with cross-functional teams conducting gap assessment, then establishing priorities and timelines based on findings. The process emphasizes quick wins while building comprehensive compliance, with testing and validation through simulations and exercises. Implementation timelines vary from 2-3 months for smaller organizations to 6-12 months for larger entities, with ongoing support available through their retainer service.

Best Suited For

Kroll works best for large enterprises, multinational corporations, and critical infrastructure organizations requiring high-level expertise and assurance, especially those reconciling NIS2 with other regulations across multiple jurisdictions. Organizations with complex environments in heavily regulated sectors like finance, healthcare, and energy benefit from their expertise in complexity, while those lacking confidence in incident response capabilities gain significant value.

Success Indicator

Kroll's cyber team responds to over 1,000 incidents yearly and conducts 100,000+ hours of offensive security testing annually, demonstrating both experience and trust. They've helped multinational clients build unified frameworks that passed regulatory inspections across multiple countries, with case studies showing significant cost savings and enhanced protection for high-profile clients.