SaaS Security Assessment & SaaS Penetration Testing
Protect what matters with SaaS Security Assessment & SaaS Penetration Testing
A SaaS security assessment is a combined application, API and cloud penetration test designed for software-as-a-service companies — with special focus on tenant isolation, authorisation between customers, and the integrations and admin functions attackers target first. Aesparrow helps SaaS startups and scale-ups pass enterprise security reviews, answer security questionnaires with confidence, and produce SOC 2 and ISO 27001 evidence.
We test the whole SaaS stack as one attack surface: the web app and its APIs, SSO/SAML and OAuth flows, multi-tenant data separation, file handling, webhooks and third-party integrations, and the AWS, Azure or GCP environment underneath. Findings come with developer-ready fixes and a customer-shareable summary letter.
- Certified senior practitioners
- Audit-ready reporting
- Free re-test included
SaaS Security Assessment & SaaS Penetration Testing — done right, the first time.
Senior practitioners. Verified findings. Free re-test.
What a SaaS security assessment covers
- Multi-tenant isolation — cross-tenant data access, IDOR and broken object-level authorisation
- Authentication & SSO — SAML, OIDC/OAuth, MFA, session and password-reset flows
- Role-based access control — privilege escalation between user, admin and super-admin roles
- APIs & webhooks — OWASP API Top 10 testing including rate limiting and mass assignment
- Integrations — third-party connectors, OAuth scopes and token storage
- Cloud infrastructure — the AWS, Azure or GCP environment hosting the platform
Why SaaS companies choose Aesparrow
- 1
Tenant-isolation testing
Cross-tenant IDOR and authorisation testing is at the core of every engagement.
- 2
Deal-ready evidence
Customer-shareable attestation letter and summary report.
- 3
SOC 2 & ISO aligned
Evidence mapped to SOC 2 CC7 and ISO 27001 Annex A controls.
- 4
Release-friendly
Test windows planned around your sprints, with critical issues shared immediately.
Enterprise deals often stall on security reviews. A credible third-party SaaS penetration test — with a clean re-test report — removes that blocker. Talk to us about a SaaS security assessment timed to your release or audit.
Why SaaS Security Assessment & SaaS Penetration Testing matters
Independent research on the cost and causes of breaches — the risks this service helps you reduce.
US$4.44M
global average cost of a data breach in 2025.
241 days
mean time to identify and contain a breach in 2025.
20%
of breaches began with exploitation of a vulnerability, up 34% in a year.
Frequently Asked Questions
Do SaaS companies need penetration testing?
How often should a SaaS company do a penetration test?
Can we share the penetration test report with customers?
Ready to secure your business with SaaS Security Assessment & SaaS Penetration Testing?
Book a free, no-obligation consultation with an Aesparrow practitioner. We’ll scope your needs, explain the approach, and share indicative timelines — no sales script.
Standards & references
Related services
Guides & answers
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Let’s find the gaps before someone else does.
Tell us what you need tested for a fixed-scope quote, or talk it through with an Aesparrow practitioner — no obligation, no sales script.