How to Prepare for a Penetration Test

Preparation makes a test more relevant and its results easier to use. Begin with a business objective, accurate scope and the people who will own remediation.

PUBLISHED 22 OCTOBER 2026 / CYBERXPERT WEBSITE RESOURCE

Explain why the test is needed

A customer requirement, new application release and infrastructure review may call for different assessments. State the decision the test should inform. Avoid treating a generic certificate or clean scan as a substitute for a clearly scoped test.

Build an accurate scope

For applications, list features, APIs, user roles, authentication flows and relevant integrations. For networks, identify owned systems, ranges, access points and segmentation questions. Confirm third-party ownership and any hosting-provider requirements. Nothing should be assumed to be authorised simply because it connects to your environment.

Agree rules of engagement

Written permission should identify the systems, timing, allowed techniques, exclusions, escalation contacts and stop conditions. Discuss operational risks and backups. Destructive or unusually high-impact activity should require explicit agreement rather than being hidden in a broad description.

Delivery cycle: understand, agree, deliver and review, with clear scope and shared ownership.

Prepare useful access and data

Provide test accounts representing relevant roles and tenants. Explain important workflows and known constraints. Use representative non-sensitive test data where possible. For a staging test, document meaningful differences from production, including authentication, network controls and external integrations.

Involve the people who will fix findings

Application owners, developers and infrastructure teams can help establish a realistic scope. Give them time for the debrief and follow-up work. Testing is more useful when remediation capacity is planned alongside the assessment rather than considered only after the report arrives.

Know what the report should contain

Expect a clear scope and limitations, executive summary, technical evidence, impact explanation and prioritised remediation advice. Findings should help the responsible team understand what needs changing. A report is evidence from a bounded engagement, not a guarantee that every weakness has been found.

Plan the retest

Clarify whether retesting is included, the timing and which fixes it covers. A targeted retest validates agreed changes. It should not be assumed to repeat the full original assessment or cover a substantially changed application.

Use the results beyond the report

Assign owners, track fixes and record accepted residual risks. Look for recurring causes, such as permission design or inconsistent configuration. Feed those lessons into development and operational processes so the engagement informs future work.