SaaS Authentication Testing: What a VAPT Should Validate
Authentication is one of the first areas enterprise reviewers care about because it controls access to the product, customer data, admin functionality, and integrations. A VAPT should validate more than the login form.
Review every login path
Test password login, SSO, magic links, password reset, invite flows, admin impersonation, support access, mobile login, and API token creation. Weaknesses often appear where secondary flows were added quickly.
Validate session behavior
Check token expiration, refresh behavior, logout, session fixation, remember-me behavior, device changes, and session invalidation after password or role changes. These details matter when accounts are shared across teams or tenants.
Test role and tenant boundaries
Authentication confirms who the user is, but authorization determines what they can do. Test whether authenticated users can reach admin routes, cross-tenant data, restricted exports, billing settings, or API-only functions.
Package evidence for buyers
A procurement-ready report should clearly explain the authentication flows tested, material findings, remediation status, and retest validation so customer reviewers can trust the outcome.
CyberImmune helps startups and mid-market technology teams turn security work into evidence buyers can trust. Learn more about our Continuous VAPT or Schedule a VAPT.