ISO 27001
ISO 27001 penetration testing evidence
ISO 27001 does not turn penetration testing into a checkbox. It expects you to understand risk, treat it, and keep evidence that controls are working. A well-scoped penetration test gives auditors and leadership practical proof that exposed systems have been challenged by an independent specialist.
What auditors usually want to see
Auditors care less about a generic certificate and more about whether your testing scope matches the systems that matter. The useful evidence is a report with dates, scope, methodology, findings, remediation status and retest results.
- Defined scope covering production-facing applications, APIs, cloud and infrastructure
- Rules of engagement and methodology, such as OWASP, PTES or CIS-aligned review
- Risk-rated findings with ownership and remediation decisions
- Retest evidence showing high-risk findings have been fixed
How to scope ISO 27001 penetration testing
Start with your statement of applicability, asset inventory and risk register. Systems that store customer data, authenticate users, process payments or support core operations should be prioritised before lower-risk internal tools.
How Darkside supports the evidence trail
Each engagement produces executive and technical evidence, then retesting closes the loop. That makes it easier to demonstrate control improvement rather than simply showing a one-time scan result.
FAQ
Common questions
Is penetration testing mandatory for ISO 27001?
ISO 27001 does not prescribe one universal penetration testing schedule for every organisation, but many certification programmes and auditors expect risk-based technical testing for exposed systems.
How often should we test for ISO 27001?
Most teams test at least annually and after major changes. Faster-moving SaaS teams often use more frequent web, API and cloud testing to keep evidence current.
Does a retest matter for ISO 27001 evidence?
Yes. A retest shows that remediation was validated, which is usually stronger evidence than a report that only lists open findings.