Top 13 Penetration Testing Companies in Belgium (2026)

The leading penetration testing companies in Belgium for 2026 are NVISO, Orange Cyberdefense Belgium, Cresco Cybersecurity, the Security Factory, Spotit, PwC Belgium, Deloitte Belgium, Nomios Belgium, Intigriti, BOSSIT, Safebyte and OFEP, plus DeepStrike, the publisher of this guide, which tests remotely. Local boutiques suit SMEs that want Belgian testers close by; enterprise and Big Four providers suit regulated groups and TIBER-BE or DORA testing; Intigriti adds crowdsourced testing and PTaaS models. Choose on manual testing depth, report quality, retesting and NIS2 evidence, not on brand.

Comparing providers beyond Belgium? Our worldwide list of penetration testing companies covers firms that deliver testing across regions.

Updated: November 2026. DeepStrike publishes this list and lists itself first; list order is not a quality ranking. Competitor profiles are based on publicly verifiable information. Buyers should independently verify the legal entity, assigned testers, scope, accreditation, onsite capability, retesting, data handling, and commercial terms before procurement.

Penetration Testing Companies in Belgium

• Compliance pressure: Belgium's NIS2 law has been in force since 18 October 2024. Essential entities reached an important supervision milestone on 18 April 2026, when the Centre for Cybersecurity Belgium expected evidence that risk-management measures and a recognized compliance pathway were in place.
• DeepStrike (publisher of this guide): Human-led testing across applications, cloud, and infrastructure, delivered remotely, with remediation collaboration.
• Strong Belgian specialists: NVISO, Cresco Cybersecurity, the Security Factory, Spotit, BOSSIT, Safebyte, and OFEP.
• Enterprise options: Orange Cyberdefense Belgium, Nomios Belgium, PwC Belgium, and Deloitte Belgium add larger teams, broader managed-security capability, and regulated-enterprise support.
• Crowdsourced testing option: Intigriti is an Antwerp-based security platform offering bug bounty, VDP, and PTaaS-style crowdsourced testing.
• Key selection factors: Manual testing depth, cloud/API/identity coverage, reporting quality, critical-finding escalation, retesting, local delivery, and regulatory fit matter more than scanner volume or brand size.

Quick Comparison: Top Penetration Testing Companies in Belgium

Which Belgian Pentest Provider Fits Your Need?

Many Belgian buyers want more than a single pentest: a partner that can also run red teaming, managed detection, GRC advice or recurring tests. The table maps common needs to the providers on this list whose own service pages describe that service, as checked for this guide in November 2026. A listing means the service is published, not that we tested its quality.

For background on these models, see our guides to red teaming and OT/ICS penetration testing. Banks and insurers supervised by the National Bank of Belgium should also read the NBB TIBER-BE team page, which says the team coordinates both voluntary TIBER-BE tests and mandatory DORA TLPT for the institutions it supervises.

Searching in Dutch or French? Belgian buyers often look for a pentest bedrijf, a penetratietest or an ethical hacking partner in Dutch, or a test d’intrusion (pentest) provider in French. It is the same service. What changes is the language of scoping calls, the report and any contract annexes. Safebyte states that it reports in the client’s own language, and BOSSIT publishes its site mainly in Dutch; for any other provider, write the report language into the statement of work.

Why Penetration Testing Matters in Belgium in 2026

In Belgium's regulated environment, penetration testing is an important way to validate security controls, but NIS2, ISO 27001 and GDPR do not make it a universal legal requirement for every organization. Neighbouring teams can also compare penetration testing companies in the Netherlands. Neighboring Luxembourg has its own shortlist of penetration testing companies in Luxembourg.

The position is more precise:

• Belgium transposed NIS2 through the Law of 26 April 2024, which entered into force on 18 October 2024.
• The Centre for Cybersecurity Belgium recognizes CyberFundamentals (CyFun®) and ISO/IEC 27001 as formal conformity pathways for covered organizations.
• Essential entities faced an important 18 April 2026 milestone to demonstrate implementation of cybersecurity risk-management measures and progress on their chosen conformity pathway.
• GDPR requires appropriate technical and organizational security measures and processes for testing their effectiveness, but it does not impose one universal pentest schedule on every organization.
• PCI DSS and DORA can create more explicit testing expectations for applicable payment and financial environments.

Penetration testing supports these obligations by validating whether controls work under realistic attack conditions. It is therefore best described as an important evidence source inside a broader security and compliance program, not as a universal standalone legal requirement.

How We Selected the Top Penetration Testing Companies in Belgium

These criteria were used to select and describe providers, not to score them, and the percentages in the table are a suggested buyer weight only. The selection favors validated exploitability and technical depth over marketing scale, looking for current public evidence of manual testing, realistic attack simulation, strong application/API/cloud/identity coverage, clear reporting, remediation support, and credible Belgium delivery.

Provider-level assurance and individual credentials are treated separately. ISO certification, CREST company accreditation, CyFun recognition, or other organizational assurance is not the same as practitioner certifications such as OSCP, OSWE, OSEP, GIAC, CISSP, CRTP, or similar credentials.

How we built this Belgium list: We looked for providers with a Belgian office in Flanders, Brussels, or Wallonia that publish penetration testing services, and checked their service, office, and certification pages on 3 November 2026. The Belgian market includes many local boutiques (Cresco, the Security Factory, BOSSIT, Safebyte), alongside Belgium-based NVISO and Intigriti, enterprise security groups, and Big Four practices; each entry says which type it is. We did not test the providers ourselves.

How to Choose the Right Penetration Testing Company in Belgium

1. Define the real attack surface. Decide whether you need web, API, mobile, cloud, internal infrastructure, Active Directory, wireless, OT, social engineering, red team, or a combined scope.
2. Separate vulnerability scanning from pentesting. Ask how much of the engagement is manual and how testers validate business logic, authorization, privilege escalation, and attack chains.
3. Check the assigned testers. Review the actual people who will execute the assessment rather than relying only on company-level branding.
4. Confirm rules of engagement. Define authorization, production restrictions, test windows, excluded systems, emergency contacts, and stop conditions.
5. Review a sample report. Strong reports should include technical evidence, business impact, prioritization, remediation guidance, and limitations.
6. Confirm critical-finding escalation. Severe findings should be reported during the engagement rather than only in the final report.
7. Verify retesting terms. Confirm whether remediation validation is included, limited to a defined window, or separately billed.
8. Check Belgium-specific compliance fit. If NIS2, CyFun, DORA, PCI DSS, ISO 27001, SOC 2, or customer assurance matters, confirm how the report supports that specific requirement.
9. Check delivery and data-handling requirements. For remote or cross-border providers, confirm tester location, evidence storage, language, and onsite needs.
10. Compare scope and outcome, not headline price. Manual test days, tester seniority, report depth, evidence quality, and retesting matter more than the cheapest quote.

Top Penetration Testing Firms in Belgium 2026

1. DeepStrike: Human-led application, cloud, and infrastructure testing

Public offering: DeepStrike's penetration testing services describe human-led testing across applications, cloud environments, and infrastructure, supported by a findings and collaboration platform. Its public process covers planning, reconnaissance, vulnerability discovery, controlled exploitation, reporting, and technical support. Published reports include reproduction steps, remediation guidance, and root-cause information; the proposal should define exact coverage and commercial terms.

Belgium relevance: Founded in 2016, DeepStrike LLC is headquartered in Newark, Delaware, has 11–50 employees, and also publishes a business address in Dubai, UAE (IFZA Business Park). It delivers testing remotely for Belgian clients; define tester locations, permitted subcontracting, and data-handling restrictions in the engagement agreement.

Team certifications: OSCP, OSWE, OSEP, OSWP, GXPN, GWAPT, eCPPT, eMAPT, eWPT, CREST CPSA, CRTP, CRTE, and Microsoft Azure Security Engineer Associate, as shown on DeepStrike's services page.

Official sources: Pricing , Contact Us

Buyer fit: Engineering teams that need application, cloud, or infrastructure testing with direct remediation collaboration.

2. NVISO: Brussels-based application and specialised-systems testing

Public offering: NVISO offers penetration testing of web applications and APIs, iOS and Android mobile apps, thick clients, and embedded systems such as IoT devices and industrial controllers. It also lists specialised assessments for core banking (z/OS, SWIFT, EBICS, AS400), OT, medical devices, automotive, and AI/LLM audits. Its web methodology maps applications against OWASP ASVS, and it states that it has completed more than 1,000 assessments.

Belgium relevance: NVISO lists its Belgian office at Guimardstraat 8, 1040 Brussels, with further offices in Frankfurt, Munich, Vienna, and Athens. Confirm which office's testers will be assigned, the reporting language, and where findings data is stored in the agreement.

Certifications: NVISO's penetration testing page lists tester certifications including Burp Suite Certified Practitioner, OSCP, OSWE, and GWAPT.

Official sources: https://www.nviso.eu/service/penetration-testing; https://www.nviso.eu/contact

Buyer fit: Large enterprises and regulated organisations that need specialist application, mobile, embedded, or core-banking testing.

What sets it apart in Belgium: A Brussels-based specialist with offices in Germany, Austria, and Greece whose published scope includes core-banking, embedded-system, and industrial-controller testing.

3. Orange Cyberdefense Belgium: Local ethical hacking backed by a global group

Public offering: Orange Cyberdefense Belgium offers internal infrastructure testing (including "From Zero to Hero" exercises that try to escalate to Domain Admin), external infrastructure, web and API, mobile application, IoT, and Wi-Fi testing, plus theoretical audits against the CIS Critical Security Controls. It states that its methodology is based on manual testing, with automated findings treated as the starting point. Reporting options range from raw scan output to executive summaries, full technical reports, and presentations.

Belgium relevance: Orange Cyberdefense Belgium lists its office at Stokerijstraat 35, 2110 Wijnegem, and says it has a local Belgian ethical-hacking team that can draw on group teams in France, Scandinavia, and South Africa (SensePost). Agree in the contract whether non-Belgian group testers may be used and how data is handled.

Official sources: https://www.orangecyberdefense.com/be/offering/professional-services/pentesting; https://www.orangecyberdefense.com/be/

Buyer fit: Large enterprises and critical-infrastructure operators that want testing alongside managed detection and response.

What sets it apart in Belgium: A local Wijnegem ethical-hacking team that can draw on Orange Cyberdefense group teams, including SensePost, for larger or specialist work.

4. Cresco Cybersecurity: Belgian pentesting and GRC boutique

Public offering: Cresco Cybersecurity describes itself as a cybersecurity pure player specialising in penetration testing and GRC. Its pentest methodology follows OWASP and OSSTMM and covers servers, endpoints, web applications, wireless networks, and network devices, combining manual techniques with automated tools, and ends with a report and agreed next steps. It also offers red teaming, social engineering, phishing simulations, managed EDR, and incident response.

Belgium relevance: Cresco lists offices at Kleetlaan 2, 1831 Diegem, and in Ottignies-Louvain-la-Neuve, and also references Paris. Cresco was acquired by the Irish group Integrity360 (announced December 2025) and still trades under the Cresco name. Confirm the seniority of the assigned testers, retesting terms, and data handling in the agreement.

Official sources: https://www.cresco.be/services/penetration-testing; https://www.cresco.be/contact

Buyer fit: Belgian SMEs and mid-market firms that want local pentesting combined with NIS2 and ISO 27001 guidance.

What sets it apart in Belgium: A pentesting and GRC boutique with offices in Diegem and Ottignies-Louvain-la-Neuve, now owned by Integrity360 but still trading as Cresco.

5. the Security Factory: Manual testing with live reporting

Public offering: the Security Factory offers web, mobile, and API application tests, external and internal network tests, cloud tests (AWS, Azure, Google Cloud), wireless and thick-client testing, red team exercises, social engineering, phishing, and pentesting as a service. It states that certified pentesters go beyond automated scanners to find logic flaws and chained vulnerabilities, using AI-assisted scanning with human validation. Its online reporting platform lets clients follow findings while testing is still in progress.

Belgium relevance: the Security Factory lists its office at Samenwerkingsstraat 50, 2845 Niel. Confirm tester assignment, capacity for larger engagements, and data handling in the agreement.

Certifications: Its homepage lists pentester certifications including OSEP, OSCP, OSCP+, CRTO, and GMOB.

Official sources: https://thesecurityfactory.be/services-ethical-hacking-penetration-testing/; https://thesecurityfactory.be/#contact

Buyer fit: Organisations that want direct tester access and real-time visibility of findings during application or infrastructure tests.

What sets it apart in Belgium: A Niel-based boutique whose online reporting platform lets clients follow findings in real time while testing is still under way.

6. Spotit: Structured pentesting alongside network and SOC services

Public offering: Spotit's offensive team offers external and internal infrastructure, web application and API, and other penetration tests, with web testing based on the OWASP Top 10 and WSTG. Its published seven-step process runs from a discovery call and scoping through execution, immediate alerts for critical issues, reporting, debriefing, and remediation with an optional retest by the original pentesters. Spotit also states that it provides an attestation letter after each engagement and runs managed NOC and SOC services.

Belgium relevance: Spotit lists its headquarters at Guldensporenpark 30, 9820 Merelbeke-Melle, and an office in Herk-de-Stad. Confirm whether retesting is included, who the assigned testers are, and how data is handled in the agreement.

Official sources: https://www.spotit.be/en/services/identify/it-security-assessment/ethical-hacking-penetration-test/; https://www.spotit.be/en/contact/

Buyer fit: Belgian mid-market and enterprise organisations that want pentesting integrated with network and security operations.

What sets it apart in Belgium: A Flemish integrator with a published seven-step test process and critical-finding alerts, and it publishes a typical price range for its tests.

7. PwC Belgium: Threat-led testing and regulated-enterprise assurance

Public offering: PwC Belgium's offensive security services include Threat-Led Penetration Testing (TLPT) aligned with TIBER and DORA, red team exercises that also test the SOC, purple team engagements, and application security assessments across the software development lifecycle. It states that it can also run more limited vulnerability assessments and penetration tests for narrower scopes.

Belgium relevance: PwC Belgium presents these services through its Belgian cyber and privacy practice. Confirm the named technical testing team, manual test-day allocation, and data handling in the engagement letter.

Official sources: https://www.pwc.be/en/services/cyber-privacy/offensive-security.html

Buyer fit: Banks, insurers, and regulated enterprises that need TIBER- or DORA-aligned threat-led testing.

What sets it apart in Belgium: It publishes a threat-led penetration testing service aligned with TIBER and DORA, which matters for NBB-supervised banks and insurers.

8. Deloitte Belgium: Dedicated ethical-hacking team

Public offering: Deloitte Belgium's ethical hacking service covers infrastructure security tests, web and mobile application tests in black-, grey-, or white-box form, Wi-Fi tests, configuration reviews, phishing simulations, red team simulations, physical security tests, and threat hunting. It describes a kill-chain-based testing approach and offers testing as one package or spread across multiple years.

Belgium relevance: Deloitte Belgium presents the service through its Belgian consulting-risk practice and says its testers hold industry-recognised certifications and take part in conferences and CTF competitions. Confirm tester assignment, retesting terms, and data handling in the agreement.

Official sources: https://www.deloitte.com/be/en/services/consulting-risk/services/ethical-hacking.html; https://www.deloitte.com/be/en/contact/contact-us.html

Buyer fit: Large Belgian organisations that want pentesting within a broader cyber-risk programme or a multi-year testing plan.

What sets it apart in Belgium: A dedicated ethical-hacking team inside a Big Four firm, with a broad catalogue that includes physical and red team tests and support for multi-year testing plans.

9. Nomios Belgium: Enterprise pentesting and red teaming

Public offering: Nomios Belgium offers expert-led penetration testing of infrastructure (external perimeter, internal network, segmentation, Active Directory), web applications and REST, GraphQL, and SOAP APIs, and AWS, Azure, or GCP cloud environments, including IAM privilege-escalation paths and container security. It also lists red team and adversary simulation, assumed-breach exercises, social engineering, and phishing simulation, alongside managed SOC and NOC services.

Belgium relevance: Nomios Belgium N.V. lists its office at Excelsiorlaan 89, 1930 Zaventem, as part of a European managed security provider. Confirm which team performs the testing, retesting terms, and data handling in the agreement.

Official sources: https://www.nomios.be/cybersecurity/exposure/pentesting-services/; https://www.nomios.be/contact/

Buyer fit: Large enterprises and cloud-heavy environments that want testing integrated with managed security and network expertise.

What sets it apart in Belgium: The Zaventem arm of a European managed security provider, suited to engagements that must cover networks, multi-cloud, and APIs together.

10. Intigriti: Antwerp-based crowdsourced security and PTaaS

Public offering: Intigriti runs a crowdsourced security platform offering bug bounty programmes, managed vulnerability disclosure programmes, live hacking events, and a Pentest as a Service product. Its PTaaS tiers (Focused, Comprehensive, and Certified) list a dedicated researcher, pentest report, letter of attestation, live progress updates, and researchers with CREST or OSCP certification, with CREST-accredited deliverables in the Certified tier. It cites a community of more than 150,000 vetted security researchers.

Belgium relevance: Intigriti lists its office at Klokstraat 16, 2600 Antwerpen, with a further office in London. Confirm how researchers are vetted, where they are located, and how findings data is handled in the agreement.

Certifications: Intigriti's site points to a trust center listing its SOC 2 and ISO 27001 credentials.

Official sources: https://www.intigriti.com/product/pentest-as-a-service; https://www.intigriti.com/contact

Buyer fit: SaaS and internet-facing businesses that want continuous crowdsourced testing alongside or between traditional pentests.

What sets it apart in Belgium: An Antwerp-based crowdsourced security platform; its PTaaS draws on vetted external researchers rather than a fixed in-house team.

11. BOSSIT: Bornem-based PTES pentesting and PTaaS subscriptions

Public offering: BOSSIT offers external, internal, web application, and wireless penetration tests, vulnerability scanning, security awareness and phishing, and a shared cyber security expert service. Its methodology follows PTES across seven phases from pre-engagement to reporting, with application testing based on the OWASP Top 10. A Pentest as a Service subscription lets clients choose test frequency and duration and combine scans with pentests.

Belgium relevance: BOSSIT lists its office at Meerstraat 2D, 2880 Bornem, and publishes its site primarily in Dutch. Confirm the testers assigned, reporting language, and data handling in the agreement.

Certifications: BOSSIT's blog reports team credentials including CISSP and PECB Certified NIS2 Lead Implementer.

Official sources: https://www.bossit.be/pentesting-methodologie/; https://www.bossit.be/contact/

Buyer fit: Belgian SMEs that want a local manual pentest partner with a flexible subscription option.

What sets it apart in Belgium: A Bornem SME specialist that follows PTES and offers pentesting as a subscription, with its site published mainly in Dutch.

12. Safebyte: Ieper-based manual pentesting for SMEs

Public offering: Safebyte offers black-box and grey-box penetration tests, web application and API tests, internal network tests, social engineering including phone and physical access tests, and multi-week red team exercises. It states that it works manually with real attacker techniques rather than automated scanners, and that reports are written for both management and IT teams. It also offers phishing simulations, industrial and cloud security, awareness training, and NIS2 support.

Belgium relevance: Safebyte BV lists its office at Ter Waarde 90, 8900 Ieper, and states that its local Belgian team reports in the client's own language under an NDA. Confirm practitioner credentials, retesting terms, and data handling in the agreement.

Official sources: https://safebyte.be/diensten/penetratietest; https://safebyte.be/contact

Buyer fit: Belgian SMEs that want direct contact with ethical hackers and practical remediation advice.

What sets it apart in Belgium: An Ieper-based team that offers phone and physical social engineering and reports in the client's own language under NDA.

13. OFEP: Brussels pentesting within a broad ICT portfolio

Public offering: OFEP lists web application, API, mobile app, IoT and medical device, OT and SCADA, and infrastructure penetration tests, plus external and internal vulnerability scanning, Active Directory, Entra ID, and Office 365 security assessments, secure code review, and TIBER and red teaming. Its wider portfolio covers GRC, CISO-as-a-service, ISO 27001 and CyFun preparation, managed security, cloud and data-centre hosting, and software development.

Belgium relevance: OFEP lists its office at Clos Joseph Otten 30, 1090 Brussels. Confirm the offensive-security team, manual methodology, retesting policy, and data handling in the agreement.

Official sources: https://www.ofep.be/infrastructure-penetration-testing/; https://www.ofep.be/contact-us/

Buyer fit: Belgian SMEs and enterprises that want pentesting alongside broader ICT, OT, and compliance services.

What sets it apart in Belgium: A Brussels ICT provider whose published test types include OT/SCADA, IoT, and medical devices.

What Changed in Belgium for NIS2 in 2026?

Belgium's NIS2 framework is no longer a future requirement. The law has been in force since 18 October 2024, and 2026 introduced a major supervisory milestone for essential entities.

The Centre for Cybersecurity Belgium stated that by 18 April 2026, essential entities needed to be able to demonstrate effective implementation of cybersecurity risk-management measures and progress through a recognized conformity path.

For entities that chose the ISO/IEC 27001 route, the CCB's April 2026 guidance required submission of the certification scope, Statement of Applicability, and latest internal audit report, with full certification to be completed by April 2027.

Depending on the chosen route, organizations may rely on:

• CyberFundamentals (CyFun®) verification or certification;
• ISO/IEC 27001 as a recognized conformity pathway;
• or direct inspection.

Pentesting can contribute evidence to these programs, but the correct claim is that it supports risk validation and assurance. It is not automatically mandatory for every Belgian organization solely because NIS2 applies.

Belgium regulatory and procurement context

Authorities (checked 3 November 2026): The Centre for Cybersecurity Belgium (CCB) is the national cybersecurity authority under the NIS2 law and runs CERT.be, the national CSIRT. CyberFundamentals verifications and certifications are carried out by conformity assessment bodies accredited by BELAC, Belgium's accreditation body, so ask whether a provider's pentest report is meant to feed a CyFun assessment and in what format.

Financial sector: The National Bank of Belgium adopted the TIBER-EU framework in May 2018 and is the central contact and coordinator for TIBER-BE and DORA threat-led penetration tests at the institutions it supervises. Banks and insurers selected for TLPT need red-team and threat-intelligence providers that meet those requirements, which is a different purchase from a standard pentest.

Data and language: Test evidence that contains personal data falls under the GDPR and the Belgian Data Protection Authority. Belgium has three official languages, so specify whether reports must be in Dutch, French, German, or English; several providers below publish mainly in Dutch or state that they report in the client's own language.

Penetration Testing vs Vulnerability Assessment

A vulnerability assessment identifies potential weaknesses, often with significant automation.

A penetration test goes further by validating whether weaknesses can actually be exploited, what an attacker can reach, and how multiple issues can be chained.

For Belgian buyers, this distinction matters because a scan-heavy service may satisfy a narrow operational need but will not provide the same assurance as an expert-led pentest that actively tests business logic, authentication, authorization, privilege escalation, and lateral movement.

One-Off Pentest vs PTaaS

Traditional pentesting is a point-in-time assessment. PTaaS and continuous-testing models add recurring validation and workflow integration.

The important procurement question is not the label. Ask exactly how much manual testing is included, who performs it, how findings are validated, and what retesting looks like.

What Does Penetration Testing Cost in Belgium?

Belgian pricing varies by:

• number of hosts, applications, APIs, or cloud accounts;
• authenticated roles;
• black-, grey-, or white-box methodology;
• internal vs external scope;
• Active Directory and identity complexity;
• mobile, wireless, OT, or physical testing;
• social engineering or red-team objectives;
• tester seniority;
• reporting and compliance evidence;
• retesting;
• onsite work;
• one-off vs PTaaS delivery.

As one concrete public example, Spotit states that most of its penetration tests fall between €5,000 and €15,000, but that is a provider-specific range, not a national benchmark.

The best comparison is a matched statement of work showing manual test days, scope, deliverables, retesting, and exclusions.

Ready to Strengthen Your Defenses?

Partner with DeepStrike to test your systems before real attackers do. DeepStrike supports Belgian organizations with one-off and continuous penetration testing across applications, APIs, cloud environments, infrastructure, and modern development workflows.

Contact DeepStrike to discuss a scope or request a technical proposal.

About the Author

Mohammed Khalil is a Cybersecurity Architect at DeepStrike, specializing in advanced penetration testing and offensive security operations. With certifications including CISSP, OSCP, and OSWE, he has led red-team and penetration-testing engagements across cloud, applications, infrastructure, and enterprise environments. His work focuses on realistic attack paths, exploit validation, adversary emulation, and practical remediation.

Technical Review: DeepStrike Offensive Security Team

FAQ

What is penetration testing and why is it important for Belgian companies?

Penetration testing is an authorized simulation of cyberattacks against systems, applications, networks, APIs, cloud environments, or other assets. It helps organizations identify exploitable weaknesses before real attackers do.

In Belgium, pentesting can support NIS2 risk-management evidence, CyFun or ISO 27001 assurance programs, DORA testing, PCI DSS requirements, GDPR security assurance, and customer due diligence depending on the organization's scope.

How much does penetration testing typically cost in Belgium?

There is no single reliable Belgium-wide price. Cost depends on scope, manual testing effort, environment complexity, tester seniority, reporting, onsite work, and retesting.

Provider-specific public ranges exist, but buyers should compare matched statements of work rather than rely on generic day-rate claims.

Who are the top penetration testing companies in Belgium?

This 2026 shortlist includes DeepStrike, NVISO, Orange Cyberdefense Belgium, Cresco Cybersecurity, the Security Factory, Spotit, PwC Belgium, Deloitte Belgium, Nomios Belgium, Intigriti, BOSSIT, Safebyte, and OFEP.

The best choice depends on whether you need a manual boutique, enterprise provider, crowdsourced model, PTaaS, cloud/API depth, OT capability, or regulated TLPT/red-team testing.

Does NIS2 require penetration testing in Belgium?

Not as a universal standalone requirement. Belgium's NIS2 law requires covered entities to implement risk-management measures and prove conformity through CyberFundamentals, ISO/IEC 27001, or direct inspection. Penetration testing is a strong way to show those controls work, and DORA or PCI DSS can make testing explicit for financial and payment environments.

Belgium's NIS2 law requires covered entities to implement cybersecurity risk-management measures and, depending on entity type and pathway, demonstrate compliance through CyFun, ISO/IEC 27001, or direct supervision. Pentesting can provide useful evidence that technical controls work, but it is one component of a wider cybersecurity program.

Is ISO 27001 accepted for Belgian NIS2 compliance?

Yes. The Centre for Cybersecurity Belgium recognizes ISO/IEC 27001 as one of the formal conformity pathways under the Belgian NIS2 framework, alongside CyberFundamentals and direct inspection.

That does not mean an ISO 27001 certificate automatically proves every technical control is effective. Pentesting can complement the management-system framework with direct technical validation.

What does it mean if a pentesting company is CREST accredited or ISO 27001 certified?

CREST company accreditation and ISO 27001 certification are provider-level assurance signals.

Individual pentester certifications such as OSCP, OSWE, OSEP, CRTP, or GIAC credentials assess practitioner skills. Buyers should look at both the provider's processes and the experience of the actual testers assigned to the engagement.

What is PTaaS and how is it different from a one-time pentest?

PTaaS, or Penetration Testing as a Service, uses a platform or recurring service model to make pentesting easier to schedule, track, integrate, and repeat.

A traditional one-time pentest provides a point-in-time snapshot. PTaaS may add live dashboards, recurring testing, direct tester communication, workflow integrations, and ongoing retesting. The exact amount of manual testing varies by provider, so buyers should verify the service definition.

How should I choose the right penetration testing firm in Belgium?

Start with scope and threat model, then compare:

1. Manual testing depth.
2. Relevant web/API/cloud/internal/OT experience.
3. Assigned tester credentials.
4. Reporting quality.
5. Critical-finding escalation.
6. Retesting.
7. Belgium/local delivery requirements.
8. NIS2/CyFun/ISO/DORA familiarity.
9. Data-handling requirements.
10. References from comparable environments.

The strongest provider is the one that matches your actual attack surface and gives your team evidence and remediation guidance they can use.

Which Belgian pentest companies also offer red teaming or TIBER-BE testing?

On this list, PwC Belgium publishes threat-led penetration testing aligned with TIBER and DORA, and OFEP lists TIBER and red teaming. Cresco Cybersecurity, the Security Factory, Deloitte Belgium, Nomios Belgium and Safebyte also publish red team exercises. The National Bank of Belgium coordinates TIBER-BE and DORA TLPT for the institutions it supervises, so regulated financial entities should confirm a provider’s TIBER-BE experience directly.

Which providers combine pentesting with managed SOC or incident response in Belgium?

Orange Cyberdefense Belgium, Spotit and Nomios Belgium publish managed security operations alongside penetration testing, and Cresco Cybersecurity lists managed EDR and incident response. If one company both monitors your environment and tests it, agree in the contract how the testing team stays independent and how findings reach the monitoring team.

Can I get a penetration test report in Dutch or French?

Usually, but confirm it in writing. Safebyte states that it reports in the client’s own language, and BOSSIT publishes its site mainly in Dutch. For any provider, name the language of the report, the executive summary and the debrief meeting in the statement of work.