Penetration testing
Penetration testing services that produce fix-ready evidence
Validate exploitable risk, prioritize fixes, and prepare evidence buyers and auditors can review.
When penetration testing becomes necessary
Use this service when your team needs evidence of exploitability, not another broad security review.
Buyer evidence request
An enterprise buyer, procurement team, or security reviewer asks for a penetration test report before approval.Release validation
A product, major feature, API, or cloud change is going live and needs controlled exploit validation.Audit pressure
Your team needs technical evidence for an audit cycle, vendor due diligence, or security questionnaire.Fix priority
Engineering needs to know which weaknesses are exploitable, how they chain together, and what to fix first.
A report is not the outcome
Unvalidated findings create noise
A long list of issues does not tell engineering what can actually be exploited. Findings need proof, context, and severity that reflects real impact.
Attack paths show impact
A penetration test connects weaknesses into plausible attack paths. That shows how far an attacker could get and where control failure matters most.
Evidence makes closure defensible
Buyers and auditors need more than screenshots. They need scope, method, finding evidence, remediation status, and closure proof where retest is scoped.
Scope the systems that carry real risk
The test scope is defined before work starts. Sunbytes can test one target area or a connected environment.
Web applications
Authentication, session handling, access control, business logic, data exposure, and common OWASP attack paths.
APIs
Endpoint authorization, object-level access control, input handling, token logic, rate limits, and sensitive data exposure.
Mobile applications
Client-side storage, API communication, authentication flows, reverse engineering exposure, and platform-specific security controls.
Cloud and infrastructure
Cloud configuration, exposed services, privilege boundaries, network paths, and infrastructure weaknesses inside the agreed scope.
Not sure what needs testing first?
How the test produces usable evidence
Each step is designed to keep the test controlled, repeatable, and useful for both engineering teams and external reviewers.
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1. Scope and rules
Confirm systems, access model, test windows, exclusions, evidence needs, and safe testing boundaries.
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2. Map the target
Understand exposed surfaces, application flows, trust boundaries, and likely paths into sensitive functions.
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3. Test safely
Run controlled manual testing against the agreed scope, combining technical depth with safety constraints.
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4. Validate findings
Confirm exploitability, impact, affected assets, and whether issues can chain into a higher-risk path.
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5. Report and prioritize
Deliver executive and technical outputs with evidence, severity, remediation priority, and next-step guidance.
Testing approach comparison
| Area | Black box | Grey box | White box |
|---|---|---|---|
| Access level | Minimal access | Limited access | Full context |
| Source info | Public surface only | Some credentials | Docs and code |
| Best fit | External attacker view | Baseline report, 30/60/90-day roadmap, evidence checklist, and executive summary. | Deep control review |
| Test depth | Outside-in validation | Targeted attack paths | Design-level analysis |
| Setup need | Fastest to start | Balanced setup | Most preparation |
| Output shape | Exposure evidence | Exploitability proof | Root-cause evidence |
What you receive after the test
Validated technical findings
Each finding includes affected assets, reproduction evidence, exploitability context, severity, business impact, and the conditions that made the issue possible.Remediation-ready priorities
The report separates critical fix items from lower-risk backlog items, so engineering can act on the sequence that reduces risk first.Reviewer-ready evidence
Executive summary, technical report, evidence pack, and retest closure evidence if a separate retest is scoped after remediation.
Findings should lead to action
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Guidance
for engineeringTechnical findings are written so developers and infrastructure owners can understand root cause, reproduction steps, and the safest remediation path.
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Support
when neededSunbytes can support remediation planning or implementation by agreement when your team needs extra security or engineering capacity.
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Closure
by evidenceAfter fixes, a retest can be scoped to validate closure and produce evidence that the finding was fixed, not only marked resolved.
Customer success is our priority
A pentest that went beyond the surface
A new authentication layer needed deeper validation. Sunbytes combined manual and automated grey-box testing to uncover and classify vulnerabilities, then guided the team through the findings and remediation options.
Grey-box pentest · SOC 2 & ISO-aligned reporting · 9 findings classified
From concept to a working prototype in 3 sprints
SandGrain needed to turn its post-quantum authentication concept into a secure, scalable cloud platform without compromising reliability. Sunbytes assembled a seven-person multidisciplinary team and delivered a functional prototype in three sprints.
15 releases · 3,380 test cases · 1,777 automated tests
Six weeks from security testing to launch readiness
Methodemeter was preparing to launch a digital education platform without dedicated in-house security expertise. Sunbytes ran a black-box pentest, guided remediation, and aligned testing with GDPR, NIS2 and ISO 27001.
6-week test-to-fix cycle · GDPR, NIS2, ISO 27001 · Launched clean
Web, API and mobile tested before an IPO security audit
C2C needed its production product tested across web, API, iOS and Android before an IPO security audit. Sunbytes ranked each finding and provided remediation guidance the team could act on.
Web, API, iOS & Android · All identified findings remediated · 5.0 Clutch review
Testimonials
“Sunbytes started to assemble the team at their own risk even before we had our seed investment signed. When that happened we could make a flying start.”
“We were impressed by the vulnerabilities that were discovered. We can tell that the pentesters dug deep to discover the vulnerabilities, and not just a surface scan.”
“Sunbytes’ thorough approach uncovered risks we’d never even considered and opened my eyes to just how important it is to secure our platform from day one.”
“Sunbytes provided practical, prioritized remediation guidance that our team could act on immediately.”
Why teams choose Sunbytes
A Netherlands-led partner for evidence-based security work: clear scope, controlled handling, and practical next steps after the baseline.
Evidence-led security work
Findings are documented with scope, method, reproduction evidence, impact, and remediation priority.
ISO 27001 operating discipline
Security work runs inside an ISO 27001-certified organization with controlled access and audit-aware handling.
MIAUW-aware reporting
Testing outputs can be structured around repeatable evidence, objective scaling, and audit-value expectations.
Software delivery context
Sunbytes understands how findings move from report to backlog, fix decision, release gate, and closure evidence.
EU-led communication
Dutch leadership helps keep scope, risk, access, and reporting expectations clear for European stakeholders.
Security and engineering bridge
When remediation needs support, Sunbytes can connect testing output to the teams responsible for fixing it.
Built on delivery proof, not security theatre
Sunbytes combines security discipline with engineering execution. The result is evidence that can move from reviewer request to remediation action.
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15+
Years of experience -
300+
Projects delivered -
20+
Countries
Ready to scope your penetration test?
Share the systems, access model, and evidence need. Sunbytes will map the right test scope before work starts.
