Customer Security Review Evidence Guide
Customer security reviews move faster when the team has evidence ready. A strong evidence package shows not only that controls exist, but that they operate consistently.
How to Use This Guide
Use this guide to prepare a practical evidence set before a customer, investor, auditor, or internal reviewer asks for security readiness details. It is educational guidance only and should be adapted to your systems, data sensitivity, and review scope.
Access control evidence
Prepare MFA settings, admin role exports, access review records, offboarding samples, and privileged access approvals. Remove stale screenshots and use dated exports where possible.
Security testing evidence
Retain summaries of SAST, DAST, dependency scanning, penetration testing, and remediation tickets. The most useful evidence explains scope, date, severity, ownership, and retest status.
Operational resilience evidence
Provide backup schedules, restore-test records, monitoring alerts, incident response plans, and post-incident action tracking. Customers usually want confidence that failures are detected and handled.
Vendor and subprocessors
Keep a list of critical vendors, their purpose, data access, assurance reports, contract security clauses, and review dates. Supplier risk is often a customer review bottleneck.
Evidence to Prepare
- Current policy or procedure that explains the control.
- Dated screenshots, exports, tickets, or logs that show the control operates.
- Named owner, review date, and remediation status for open gaps.
- Clear limitation notes where the evidence is incomplete or scope-specific.
Key Takeaways
- Evidence should be current, dated, and mapped to the control it supports.
- A missing evidence owner often becomes a customer-review delay.
- Readiness assessments help find gaps before the customer asks.