Authentication & Session Testing
Account takeover paths, session weaknesses, token misuse, and authentication edge cases.
Security reviews for SaaS products with complex auth, APIs, tenant data, and AI-assisted workflows. The focus is finding the product paths where a small control gap can become a customer-facing security issue.
Cross-tenant access through a missing ownership check
Modern SaaS applications rarely have one obvious weak point. APIs, integrations, tenant data, and auth systems create product risk that needs application security testing beyond checklists and scanner output.
Account takeover paths, session weaknesses, token misuse, and authentication edge cases.
REST APIs, GraphQL resolvers, external integrations, and hidden data exposure.
Authorization boundaries, object ownership, tenant isolation, and business logic abuse that automated tools often miss.
The services below map to the work SaaS teams usually need before a launch, release, or customer security review: API security testing, penetration testing, asset monitoring, vulnerability assessment, and focused review support.
REST and GraphQL API testing for authorization flaws, object-level access issues, token scope problems, and hidden data exposure.
Explore APIWeb application penetration testing for login, sessions, authorization boundaries, and critical product flows.
Explore PentestExternal asset visibility to identify exposed endpoints, hidden services, forgotten subdomains, and internet-facing attack surface risks.
Explore AssetsPractical vulnerability assessment that separates urgent product exposure from low-value scanner noise and gives teams a clear priority order.
Explore AssessmentFocused security review for launches, releases, high-risk changes, SaaS workflows, APIs, and areas where product risk needs validation.
View ReviewsThe process starts with product context: roles, tenant boundaries, sensitive workflows, and release goals. From there, testing is scoped around how the product actually behaves so findings stay relevant to engineering and leadership decisions.
Define product areas, user roles, sensitive data, and review goals.
Identify trust boundaries, tenant models, and workflow dependencies.
Exercise role changes, request tampering, object access, and workflow edge cases.
Confirm reachability, affected users, and product priority.
Summarize evidence, risk context, and recommended fixes.
Check critical fixes before engineering closes the loop.
Coverage concentrates on controls that protect tenant data and critical product flows: login and sessions, authorization boundaries, REST and GraphQL endpoints, integrations, workflow state, and AI-assisted actions.
Reports are written so leaders can understand exposure and engineers can reproduce the issue without a long handoff. Each item includes affected endpoints or workflows, evidence, priority, fix direction, and retest criteria.
GET /api/v1/accounts/{id}/records and export flow.Founder-led means the person shaping the scope also stays close to the review, evidence, and client communication. The work is treated like a security partnership with product context, clear tradeoffs, and direct access when engineering needs clarification.
Modern SaaS platforms rarely fail at a single point. Risk often appears when identity, object access, integrations, data flows, and workflow state overlap.
These are the issue classes most often uncovered when reviewing multi-tenant SaaS products, APIs, GraphQL resolvers, and AI-assisted workflows.
Client value comes from clarity: teams see which workflows matter, what evidence supports the finding, who should own the fix, and when a retest is worth doing. The result is less back-and-forth and faster security decisions.
Focused engagements for launches, deeper product assurance, and recurring security review support.
For one feature, API release, auth change, or high-risk workflow.
For core SaaS, API, authorization, tenant isolation, and business logic risk.
For teams shipping frequent security-sensitive product changes.
Technical articles, vulnerability writeups, and research notes on API security, GraphQL security, application security testing, and failure patterns observed in SaaS products.
Resolver behavior exposed account signals and internal IDs before meaningful authorization checks.
Read Article →A low-privilege user reached restricted actions through trusted workflow state.
Read Field Note →Manual object-swapping revealed cross-tenant access that automated checks missed.
Read Insight →Answers for teams comparing SaaS penetration testing, API security testing, reporting depth, and retest support.
SaaS products hold tenant data and expose workflows through web applications, APIs, and integrations. Penetration testing checks whether those controls hold up against role abuse, object access, and customer-impacting paths.
Common findings include authentication and session weaknesses, IDOR/BOLA, broken access control, tenant isolation failures, API authorization issues, business logic vulnerabilities, and sensitive data exposure.
Automated scanning is useful for known signatures. A security review adds product context: user roles, object ownership, workflow state, and whether the issue can be reproduced in the application.
Yes. Reviews can cover REST API security, GraphQL security, authentication, authorization, external integrations, web applications, and multi-tenant SaaS workflows.
You receive an executive risk summary, prioritized findings, affected endpoints or workflows, step-by-step reproduction, engineer-ready evidence, fix recommendations, and retest criteria.
Yes. Retesting can confirm high-risk issues are resolved and give engineering a clear closeout path for the fixes that matter most.
Share the SaaS application, API, workflow, or release you want reviewed. You will get a focused scope and practical next steps.