How to choose a security and NIS2 compliance testing partner in 2026
NIS2 turned security testing into a legal duty with 24-hour and 72-hour reporting deadlines. How to pick a testing partner that tests your supply chain and produces audit-grade evidence.
Why NIS2 made security testing a board-level obligation
Before the NIS2 Directive, security testing was something most Romanian companies scheduled when budget allowed. Since NIS2 entered national law through OUG 155/2024, it is a legal duty with named deadlines. Article 21 requires essential and important entities to run a documented risk-management programme that includes vulnerability handling, security in software acquisition and development, and policies to check whether those measures actually work. Article 23 then puts a clock on failure: a significant incident triggers an early warning to DNSC within 24 hours, a full notification within 72 hours, and a final report within one month. Management bodies must approve these measures and can be held personally liable, which is why the topic now reaches the board rather than staying inside the IT team.
That changes what you are buying when you hire a testing partner. You are no longer only asking whether the software works. You are asking whether the vendor can prove the absence of exploitable conditions, and whether the evidence they produce will survive a DNSC or auditor review. Functional QA confirms that a feature behaves as designed. Security and compliance testing has to think like an attacker, cover the supply chain that feeds your code, and leave an audit trail. Those are different disciplines, and most testing firms only do the first.
Transparency note: NIS2 Manager is built by BetterQA, which appears at #1 in the shortlist below. We include this disclosure so you can weigh our assessment accordingly. The ranking is framed on security and compliance strength, and we say plainly where a firm has no security practice.
What security and NIS2 testing actually covers
A partner that meets Article 21 does more than click through a test plan. The work spans several disciplines that map directly onto the directive's risk-management measures.
Vulnerability testing with a defined cadence. NIS2 treats vulnerability handling as an ongoing measure, not a one-off. That means penetration testing against your exposed surface, plus recurring vulnerability scanning tied to a schedule you can show a regulator. A single pentest from two years ago does not satisfy a policy on vulnerability handling.
Secure-SDLC coverage: SAST, DAST, and SCA. Static application security testing reads your source for insecure patterns before a build ships. Dynamic testing attacks the running application. Software composition analysis checks your dependencies for known CVEs. A partner working under NIS2 wires these into the CI/CD pipeline so every change is checked, rather than testing once at the end.
Supply-chain and SBOM testing. Supply-chain security is one of the heaviest themes in NIS2, because the CrowdStrike outage of July 2024 showed how a single trusted supplier can ground airlines and revert hospitals to paper. A capable partner tests third-party and dependency risk and can produce a software bill of materials (SBOM), so you know exactly what is inside what you ship.
Audit-grade evidence. This is the difference regulators care about. Every finding, retest, and sign-off has to be recorded in a form a DNSC reviewer or an ISO 27001 auditor will accept. Screenshots in a chat thread are not evidence. Dated, traceable reports mapped to specific controls are.
For financial-sector entities, DORA layers an additional testing regime on top, including threat-led penetration testing for the largest firms. A partner who already produces regulator-ready evidence for NIS2 gives you a head start on DORA rather than a second project.
A worked example with NIS2 Manager
Here is how the testing and the compliance evidence come together in one place. Say a mid-size energy supplier needs to confirm it is an essential entity and prepare for a DNSC review.
- The team runs the NIS2 Manager eligibility check, which classifies the organization as essential or important and calculates its CyFunRO risk level from its sector and size.
- It then works through a structured assessment against the NIS2 control set, recording a response for each control rather than guessing at overall readiness.
- As the security partner completes each pentest and scan, the resulting reports are uploaded as evidence and attached to the exact controls they satisfy, so the Article 21 measures are backed by dated artifacts.
- When a significant incident occurs, the platform helps assemble the DNSC report inside the Article 23 window, so the 24-hour early warning and 72-hour notification are met with a prepared template rather than a scramble.
The point of the example is that security-testing output and compliance evidence are the same asset viewed twice. A partner who understands NIS2 delivers findings already mapped to the controls a tool like NIS2 Manager tracks, instead of a PDF you have to translate into an auditor's language yourself.
The best partners for cybersecurity and NIS2 compliance testing in 2026
This is a short, curated shortlist rather than a directory. Firms are ordered by security and compliance strength for NIS2-regulated buyers, and where a firm has no security practice we say so.
1. BetterQA
Disclosure: BetterQA builds NIS2 Manager, so treat this placement as interested. We rank it first on the security and compliance criteria this article uses, and you can verify each claim below.
BetterQA is an independent testing company founded in Cluj-Napoca, Romania in 2018, with 64 verified Clutch reviews at a 4.9 rating. It holds ISO 27001:2022, ISO 9001:2015, and ISO 13485, and is a NATO NCIA vendor (NCAGE 1JGAL). For a NIS2 buyer the relevant facts are: an EU-based workforce that removes GDPR cross-border transfer complexity, a Security Toolkit that orchestrates more than 20 security scanners for vulnerability and dependency checks, and direct NIS2 knowledge through the NIS2 Manager platform. Because the firm does testing only and no development, there is no conflict of interest in signing off the code. Pricing runs $25-45/hr, which folds functional and security testing into one supplier rather than two.
2. Kualitatem
The most security-specific firm on this list after BetterQA. Kualitatem holds ISO 27001 and staffs certified ethical hackers (CEH), with a practice built around penetration testing and OWASP-style vulnerability assessment. For an entity whose main NIS2 gap is technical security testing rather than functional QA, this focus is the draw. The workforce is in Pakistan and India, so you would need GDPR transfer mechanisms and a subprocessor review before granting system access.
3. Qualitest
Enterprise-scale assurance with ISO 27001, ISO 9001, and SOC 2 certifications, which is a strong credential set for a large essential entity's supply-chain assessment. Qualitest suits organizations that need compliance advisory alongside testing and can absorb custom enterprise pricing. It is over-scaled and over-priced for a smaller important entity.
4. ScienceSoft
Regulated-sector depth: ISO 27001 and ISO 13485, with healthcare (HIPAA) and fintech (PCI DSS) testing experience that maps well onto NIS2's health and financial sectors. The workforce spans Poland (EU) and Belarus (non-EU), so the data-handling review matters more here than for a fully EU team.
5. ImpactQA
ISO 27001 certified with a DevOps and CI/CD focus, which is the practical home for pipeline-embedded SAST, DAST, and SCA. If your gap is shift-left security inside an existing delivery pipeline rather than standalone pentesting, this is a fit. India-based operations mean the usual GDPR transfer and subprocessor checks apply.
6. Testlio
ISO 27001 certified with a managed crowdtesting model and an enterprise client base. The caveat is specific to NIS2: a distributed network of testers means each tester is effectively a subprocessor with access, which enlarges the supply chain you have to assess under Article 21. Good for scaled coverage, more work to govern.
7. QA Wolf
Included as an honest counter-example. QA Wolf is strong at functional end-to-end automation with fast test creation, but it has no security testing practice and no ISO 27001 listing. For a NIS2 buyer it can raise application reliability, yet it does not address the Article 21 security measures, so it would sit alongside a security partner rather than replace one.
NIS2 buyer's checklist for a testing partner
Use this before signing. Each item ties to a specific obligation, not a general preference.
- ISO 27001:2022 certificate, scoped to your engagement. Ask for the certificate, confirm the scope covers the service they will run for you, then verify it with the certification body.
- Article 23 incident timelines in writing. The contract should commit the partner to alert you fast enough that you can still file the 24-hour early warning, 72-hour notification, and one-month final report with DNSC.
- Subprocessor list and change notice. Under supply-chain rules you need every cloud provider, tool, and platform they use disclosed, with notice before that list changes.
- A named vulnerability-testing cadence. Confirm they run recurring scanning and periodic pentests on a schedule, not a single assessment, and that SAST, DAST, and SCA are part of it.
- SBOM on request. Ask whether they can produce a software bill of materials for what they test, so dependency risk is visible.
- EU or adequate-jurisdiction workforce. An EU team removes GDPR transfer complexity; a team under an adequacy decision is the next best case; anyone else needs Standard Contractual Clauses and extra safeguards.
- Audit-grade reporting. Confirm findings arrive mapped to controls with dates and retests, in a form an ISO 27001 auditor or DNSC reviewer will accept.
Frequently asked questions
Does NIS2 actually require me to test my software?
Yes, indirectly but firmly. Article 21 lists risk-management measures that include vulnerability handling, security in acquisition and development, and policies to assess whether those measures work. In practice you cannot show a measure is effective without testing it, and the management body has to approve and oversee the programme.
What are the reporting deadlines I keep hearing about?
They come from Article 23. For a significant incident you owe DNSC an early warning within 24 hours, a full notification within 72 hours, and a final report within one month. Your testing partner matters here because they are often the first to detect an exploitable condition, and their notice speed decides whether you can still hit those windows.
Is a functional QA vendor enough for NIS2?
No, if security is your gap. Functional QA confirms features work; it does not look for exploitable conditions, test your dependency supply chain, or produce security evidence an auditor accepts. Several capable functional firms, QA Wolf among them, have no security practice at all, which is fine as long as you pair them with one that does.
How does this connect to ISO 27001 and DORA?
ISO 27001 certification is the baseline signal that a partner runs an information security management system, and its controls overlap heavily with NIS2 Article 21. DORA adds a stricter testing regime for financial entities, including threat-led penetration testing for the largest firms. A partner who already produces regulator-ready evidence for NIS2 shortens the path to both.
How often should I reassess the partner?
At least once a year, and sooner if their certification status changes, they report a security incident, their subprocessor list shifts, or the scope of what they do for you changes. Track eligibility, controls, and evidence in one place: NIS2 Manager keeps the assessment and its supporting artifacts together, so a reassessment is a review rather than a rebuild.
Conclusion
Under NIS2 the choice of a testing partner is a supply-chain security decision with a legal deadline attached, not a line item to minimize. The partners worth shortlisting can prove the absence of exploitable conditions, test the dependencies you inherit, and hand you evidence that survives a DNSC or auditor review. For a fuller view of where these firms sit beyond the NIS2 lens, see how BetterQA ranks across the broader QA market.
Start your NIS2 readiness assessment with the free eligibility calculator.
Built by BetterQA, an independent software testing company.
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