SaaS Penetration Testing

SaaS platforms carry a unique risk profile: a single vulnerability doesn't just affect one customer — it can expose every tenant's data simultaneously. When your enterprise clients ask for your penetration test report (and they will), the quality of that assessment directly affects whether deals close or stall. Our SaaS penetration testing methodology is designed specifically for multi-tenant architectures. The central question we answer is: can Tenant A access Tenant B's data? We test every data access pathway systematically — direct object references, API parameter manipulation, cached responses, shared infrastructure resources, search functionality, data export features, and webhook endpoints — to verify that tenant boundaries hold under adversarial conditions. Beyond isolation, we assess your full platform attack surface. API security testing covers all endpoint types (REST, GraphQL, WebSocket) with focus on authorization at every layer. Authentication and SSO integration testing covers SAML, OAuth 2.0, and OIDC implementations for common misconfiguration patterns. Role-based access control testing verifies that permissions work correctly both within a single tenant and across the platform's administrative hierarchy. We test subscription and billing logic for manipulation — can a user on a free tier access premium features? Can trial periods be extended? Can usage limits be bypassed? These business logic vulnerabilities don't appear in vulnerability scanners but can have direct revenue impact. CI/CD pipeline security is part of every SaaS engagement. A compromised build pipeline is one of the highest-impact attack vectors because it can inject malicious code that affects all tenants simultaneously. We test for secrets exposure in build logs, artifact integrity, deployment permissions, and pipeline configuration drift. Cloud infrastructure misconfigurations (IAM over-permissioning, storage exposure, network segmentation gaps) are assessed specifically for multi-tenant impact — where a single misconfiguration can cascade across your entire customer base. All testing is designed for production safety. We work with your engineering team to define testing boundaries, use dedicated test tenants, and coordinate any potentially disruptive test cases. Critical findings — especially tenant isolation failures — are reported immediately.