Security testing for B2B SaaS products
We test your SaaS app, APIs, and tenant boundaries for authorization and data access issues—using an agreed scope, safe methods, and test accounts so you can evaluate risk without disrupting customers. AI features and MCP integrations can be included in the same scoped engagement.
Fixed scope, coordinated testing, and clear handoffs.
Where SaaS teams need clearer answers
Security reviews often leave open questions that slow decisions and create follow-up work. We focus this section on the areas where SaaS leaders want concrete evidence and plain-language guidance.
Tenant boundaries you can defend
We verify isolation with real workflows and role paths, then document what was tested so you can explain it internally.
API behavior under real access patterns
We map authentication, authorization, and rate controls across critical endpoints, then show where controls align or drift.
Integrations and shared responsibility
We review OAuth, webhooks, and partner flows to clarify who owns which controls and where the handoffs need tightening.
Evidence that supports audits
Findings are written for review: clear impact, reproducible steps, and guidance that makes remediation defensible.
What We Test in SaaS Environments
Most real-world misuse starts with ordinary access and looks for places where permissions drift across tenants, roles, or integrations. We model those paths with agreed test accounts and show how your controls behave in practice.
Tenant Boundary Enforcement
We validate isolation across tenants, roles, and object ownership using real workflows and data partitions.
- Cross-tenant access via direct object references
- Tenant scoping in queries and background jobs
- Role and plan-based access enforcement
- Shared resource and metadata leakage
Authorization in APIs
We trace how authorization is applied across the endpoints that power your UI and integrations.
- Token and session scope validation
- Endpoint-level authorization for read/write actions
- Bulk and batch operation controls
- Rate limits on sensitive endpoints
Integrations & OAuth
We test the trust boundaries between your product and connected services.
- OAuth consent and token storage
- Webhook verification and replay handling
- Least-privilege scopes for third-party apps
- Callback URL and redirect handling
Admin & Support Tools
We examine the tools used to support customers, where access paths can differ from the main product.
- Impersonation and support access flows
- Privilege escalation paths in admin roles
- Audit logging for admin actions
- Separation between internal and customer data
Data Handling & Exports
We review how data leaves the system to keep access consistent across exports and reports.
- Export endpoints and report generation
- Backup and snapshot access controls
- Data deletion and retention workflows
- PII exposure in logs and errors
Findings that give SaaS teams confidence
Each issue is documented with evidence, scope, and clear remediation guidance so you can explain risk and next steps without guesswork.
Tenant boundary checks that drift in edge flows
Access controls held in the main UI but failed in background jobs and exports, creating inconsistent isolation across tenants.
Resolution: We map the exact control gap and provide test cases your team can use to confirm the fix across all paths.
API authorization gaps in bulk actions
Batch endpoints accepted object IDs without validating ownership, which could expose or modify data at scale.
Resolution: We document the request patterns and add validation guidance to align authorization across batch operations.
OAuth scopes broader than intended
Third-party tokens requested permissions beyond what the integration required, increasing exposure if a token is misused.
Resolution: We recommend least-privilege scope adjustments and a review checklist for future integrations.
Support tooling bypassed product-level guardrails
Internal tools could access customer data without the same logging and approval steps used in the core product.
Resolution: We outline the control parity needed to keep support access auditable and aligned with policy.
Frequently Asked Questions
What do we receive at the end of the engagement?
You get a report with an executive summary, a clear scope statement, coverage notes, reproducible evidence, and fix guidance. We also include a prioritized remediation checklist so your team can plan the next steps without guesswork.
How do you show tenant isolation and authorization coverage?
We document the tenants, roles, and workflows tested, and show how access controls behaved in each path. Where something is out of scope, we call it out explicitly so internal reviewers have a complete picture.
How will findings be presented to our engineering team?
Each finding includes the affected endpoints or workflows, step-by-step reproduction, evidence, and practical remediation guidance. We can walk through the results with your team to align on fixes.
Can we use the report for customer or audit reviews?
Yes. The report is written to be defensible for internal and external review, with clear scope, methodology, evidence, and remediation notes that support due diligence discussions.
Safe next step
Talk through your SaaS scope.
No pressure to commit.
We can review your tenant model, critical workflows, and integrations, then outline a scoped test plan. If it is helpful, we will share a fixed quote and a sample report to set expectations.
Discuss your SaaS scopeor view a sample report first