When a new user account is created, when a new piece of code joins the stack, when an API key is issued—these moments define security for the rest of the system’s life. The onboarding process security review exists to catch every weak point before they become permanent.
A strong onboarding security review begins with identity verification. Every new user, internal or external, must pass authentication standards that match or exceed your baseline policy. This means multi-factor authentication from day one, strict password requirements, and no shared credentials.
Next, review permission levels as part of the onboarding checklist. Default access should be minimal, aligned with least privilege principles. A new engineer should not have production database rights without an explicit and logged request, and a new service integration should operate within its own isolated environment.
Code and service onboarding also require threat modeling. Every repository, package, and dependency must be scanned for known vulnerabilities before integration. The process should include static code analysis, dependency health checks, and reviewing third-party API contracts for potential attack vectors.