Nestor Security

What Nestor Security does

Nestor Security B.V. is a Dutch information security consultancy headquartered in Haren (Groningen), Netherlands, operating as a subsidiary of the BlueGem holding group. The firm provides outsourced security leadership (CISO-as-a-Service, Security Officer-as-a-Service, DPO/FG-as-a-Service, Privacy Officer-as-a-Service), ISO 27001, NEN 7510, NIS2, BIO, ISAE 3402/3000, and DORA compliance implementation and certification support, internal audits, penetration testing, security scans, and awareness training. Its core customer base of over 500 organizations is concentrated in Dutch healthcare, government, and mid-market software sectors, with claimed strength in NEN 7510 (100% external audit pass rate) and over 1,000 internal audits and 350 certification audits completed historically.

The firm operates a hybrid consulting-plus-tool model. Beyond pure advisory hours, Nestor Security distributes three proprietary or co-developed tools: Logspect (healthcare-focused log analysis for NEN 7513 dossier access monitoring), Datamasking (GDPR/AVG-compliant anonymization for test environments), and Secure Dropzone (secure large-file exchange, offered via partnership with Warpnet). The product portfolio is not a unified SaaS platform; these tools are adjuncts to the services-led engagement model. Distribution is direct (website, phone, email) supplemented by events (BSides Groningen, IT Security & Legal Symposium) and a referral network anchored by Warpnet, Perium, Ydentic, LegalMike, DeHaan, and Rabobank.

Revenue is generated primarily through professional services billings (project-based ISMS implementations, retained Security Officer engagements, audit fees) and managed ISMS contracts (30 active retainers at any time). Pricing is quote-based and not publicly disclosed, with indicative certification body fees published for NEN 7510 (€1k-€10k depending on phase). The firm employs 14 people, operates exclusively in the Netherlands with primary density in Northern Netherlands, and shows no public funding, acquisitions, or international expansion. The business model is best characterized as a specialized compliance advisory practice with a defensible regulatory niche and modest proprietary tooling.

Name

Nestor Security

Legal name

Nestor Security B.V.

Website

https://nestor-security.nl

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Nestor Security is a Dutch information security consultancy (14 employees, Haren/Groningen) that delivers ISO 27001, NEN 7510, NIS2, BIO, and ISAE compliance implementation, internal audits, and outsourced CISO/DPO services to over 500 Dutch healthcare, government, and mid-market software organizations.

Ownership category

akta.pro rank

Product category

Information Security Consulting & Compliance

NAICS

Investigation and Security Services (5616), Computer Systems Design and Related Services (54151)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Security Audits & Compliance (ISO 27001, SOC 2, PCI DSS, HIPAA, SOX) (BPAKADAC)

akta.pro secondary industries

Bug Bounty, Vulnerability Disclosure & Security Services (FSAPAJAL), Network Security Services (Firewall/VPN/ZTNA/SASE Integration) (BPAEAEAG)

Keywords

• Information security consulting
• ISMS implementation services
• Cybersecurity compliance auditing
• Security officer services
• Data protection consulting

Headquarters

HQ city

Haren

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Professional Services - ISMS Implementation: Consulting engagements for implementing information security management systems (ISMS) according to standards such as ISO 27001, NEN 7510, BIO, ISAE 3402/3000. Engagement typically involves baseline measurement, gap analysis, policy development, implementation support, internal audits, and preparation for certification audits.
2. Security Officer as a Service: Providing part-time or full-time Security Officers, CISOs, Privacy Officers, and Data Protection Officers (FG/DPO) to organizations that need to fulfill these roles but lack internal resources.
3. Internal and Certification Audits: Conducting internal audits required for standards compliance (ISO 27001, NEN 7510, BIO, DORA) and preparing organizations for external certification audits.
4. Training and Awareness: Delivering information security awareness training, phishing campaigns, and NIS2 board/management training programs to organizations.
5. Security Scans and Penetration Testing: Providing cybersecurity scans and penetration testing services, including Cyber Security Scans and pen testing, to identify vulnerabilities in an organization's environment.
6. ISMS Management / Managed Services: Ongoing management of an organization's Information Security Management System, including planning and supervision of internal audits, preparation for external audits, security incident handling, quarterly meetings, and regulatory compliance updates.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Nestor Security is a Dutch information security consultancy that provides ISMS implementation and management, compliance certification support (ISO 27001, NEN 7510, NIS2, BIO, ISAE 3402/3000), and outsourced security officer roles (CISO, DPO/FG, Privacy Officer). It also offers training and awareness programs, internal and certification audits, and security scans/penetration testing. The firm complements its services with three proprietary tools: Logspect (patient record log analysis), Datamasking (data anonymization for test environments), and Secure Dropzone (secure file exchange via Warpnet).

Product overview

Nestor Security offers a portfolio of information security services and tools. The company provides professional services including Security Officers as a Service (Security Officer, CISO, DPO/FG, Privacy Officer roles), compliance and certification services (ISO 27001, NEN 7510, NIS2, BIO, ISAE 3402/3000, Cyberbeveiligingswet), training and awareness programs, security scans, internal audits, and ISMS management. The product portfolio includes three named applications: Logspect (for log analysis and patient record access control), Datamasking (for anonymizing sensitive data), and Secure Dropzone (for secure file exchange, through Warpnet partnership). The offering is a services-led portfolio rather than a unified software platform, combining consulting expertise with tool-based solutions for organizations seeking information security compliance.

Differentiator

Problem solved

Functional benefit

Products and services

• Logspect

Quantifiable outcome

• 100% of NEN 7510 clients pass the external final audit
• +4 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• WarpnetcoreStrategic or Co-development PartnerNestor Security and Warpnet have formed a strategic partnership to offer a comprehensive cybersecurity solution combining policy and technology expertise. Warpnet provides security technology services including penetration testing, SOC 24/7 monitoring, cloud engineering, and Secure Dropzone. Nestor Security provides strategic and organizational context including compliance consulting, ISO/NEN implementation, and ISMS management. Together they offer a total solution for organizations combining ethical hacking with governance and compliance support. Nestor Security also distributes Warpnet's Secure Dropzone tool on their website.
• PeriumcoreTechnology or IntegrationNestor Security and Perium have partnered to provide organizations with a combined offering where Nestor provides expert consulting, implementation, and guidance while Perium provides the structural compliance management platform in one central platform. This creates an efficient approach where consultancy and software reinforce each other, enabling continuous compliance management.
• BlueGemcoreOthersNestor Security is a subsidiary/part of BlueGem BV. BlueGem operates as a holding company that provides a platform for security and compliance businesses. Nestor Security recruits employees through BlueGem's hiring platform (bluegem-bv.homerun.co).
• DeHaan Attorneys at Law & NotariesminorImplementation/ SI/ Consulting PartnerDeHaan is a law firm that co-organized the IT Security & Legal Symposium 2024 with Nestor Security, Warpnet, and Rabobank. They provide legal expertise on cybersecurity legislation topics, complementing Nestor Security's technical compliance services.
• RabobankminorImplementation/ SI/ Consulting PartnerRabobank co-organized the IT Security & Legal Symposium 2024 with Nestor Security, providing risk and insurance expertise on cybersecurity topics. They contribute knowledge on cyber insurance and risk management aspects of cybersecurity.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Market position

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/nestor-security-nl

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Nestor Security