Account takeover
Login, recovery, MFA, or identity transition weaknesses that can let an attacker gain control of user accounts.
Penetration Testing
Manual Penetration Testing for SaaS Applications
Practical web application penetration testing for authentication, sessions, authorization, access control, business logic, tenant isolation, sensitive data, and critical SaaS workflows.
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Application SecurityAuthenticationAccess ControlBusiness Logic
attack path
01ReconMap exposed flows
02AuthenticationLogin and recovery paths
03SessionToken and state handling
04AuthorizationRole and tenant boundary
05Access Control BypassRestricted action reached
06Business ImpactOutcome confirmed
Coverage
What We Assess
Testing follows real SaaS workflows, user roles, and data paths to identify exploitable vulnerabilities that matter to product and engineering teams.
Authentication TestingSession HandlingAuthorization TestingAccess Control TestingTenant IsolationBusiness LogicSensitive DataCritical Workflows
Findings
Common Issues We Validate
Manual testing validates practical abuse cases across authentication, sessions, authorization, access control, tenant isolation, and business logic instead of stopping at generic vulnerability scanner output.
Privilege escalation
Role or permission flaws that let a normal user reach admin, manager, or restricted product actions.
Broken Access Control (IDOR)
Object ownership checks fail, exposing records or actions outside the user’s intended access boundary.
Business logic abuse
Valid product actions chained to bypass approvals, limits, billing rules, or workflow restrictions.
Tenant isolation failures
Cross-tenant paths where organization context is missing, caller-controlled, or inconsistently enforced.
Sensitive data exposure
Customer, operational, or personal data exposed through UI flows, exports, APIs, or over-broad responses.
Authentication weaknesses
Weak login controls, recovery flows, account enumeration, session creation, or credential-handling paths.
Session management flaws
Token lifetime, logout, fixation, refresh, state transition, or session reuse issues that expand attacker reach.
Attack Path
How Real Attack Paths Are Chained
A real penetration test follows how reconnaissance, login behavior, session state, role boundaries, and object access combine into a practical exploit path with measurable business impact.
01ReconMap attack surface, exposed APIs, roles, and critical workflows.
02Login FlowReview authentication, recovery, MFA, and account transition behavior.
03Session StateInspect token handling, session boundaries, logout, and state changes.
04Role BoundaryCompare user, admin, and tenant permissions across product actions.
05Object AccessExploit stage: object or workflow access bypasses authorization.
06Business ImpactConfirm account takeover, privilege escalation, data exposure, or workflow abuse.
Validation Depth
What Makes This a Real Penetration Test
The review is built around practical exploit paths, not just tool output or isolated findings.
Manual abuse-case testing
Test actions the product allows.
Validate where those actions can be abused.
Auth and session review
Review login, recovery, token behavior.
Check identity and session transitions.
Access control validation
Check roles, tenants, object ownership.
Validate restricted actions across users.
Business logic chaining
Combine valid workflow steps.
Prove realistic SaaS abuse paths.
Client Learning
What Clients Typically Learn
Penetration testing gives product and engineering teams a clearer view of where attackers can move from normal access to meaningful impact.
Whether login, recovery, MFA, and account transition flows could support account takeover or user enumeration.
Where token handling, logout, session reuse, or state changes increase attacker persistence or privilege reach.
How IDOR, privilege escalation, tenant isolation gaps, or missing ownership checks expose restricted actions.
Which valid workflows can be chained into sensitive data exposure, approval bypass, or customer-impacting outcomes.
Difference
Manual Testing vs Automated Scanning
Automated scanning can help surface known patterns. THF manual penetration testing validates whether a real attacker can chain application behavior into impact.
Pattern-based output
- Known signaturesFinds recognizable patterns, not product-specific exploit chains.
- False positivesAlerts often need manual triage before engineering can act.
- No business contextDoes not understand roles, tenants, approvals, or sensitive workflows.
- No impact verificationSeverity is reported without proving realistic attacker outcomes.
Exploit-validated assessment
- Real exploit chainsTests how normal user actions become attacker paths.
- Manually validated findingsConfirms reachability, prerequisites, and reproducible evidence.
- Business logic testingReviews workflows, roles, tenant boundaries, and high-risk actions.
- Impact confirmationConnects technical weakness to account, data, workflow, or business impact.
Methodology
Our Penetration Testing Methodology
Manual-first testing focused on real exploitability.
Recon & Scoping
Identify attack surface, exposed APIs, authentication flows, user roles, business logic, and sensitive workflows.
Manual Security Testing
Validate authentication, session handling, authorization, access control, tenant isolation, and business logic.
Exploit Validation
Confirm exploitability, business impact, realistic attacker paths, and chained vulnerabilities.
Reporting & Retesting
Provide reproduction steps, remediation guidance, developer-ready reporting, and retest validation.
Attack Simulation
Advanced Application Attack Simulation
Testing goes beyond single checks by simulating realistic abuse of SaaS workflows, user roles, exposed APIs, session state, and sensitive business actions.
Account takeover pathsPrivilege escalationTenant boundary abuseSensitive workflow misuse
01Start with valid accessNormal user, tenant, or low-privilege role.
02Change contextSession, role, object, tenant, or workflow state.
03Reach restricted behaviorUnauthorized action, data, or workflow.
04Confirm impactEvidence tied to business risk and remediation.
Delivery
Clear Reporting for Engineering Teams
Findings connect exploitability to product risk with evidence, practical fix guidance, and retest criteria.
User ContextRole ValidationRestricted ActionBusiness Impact
Finding
Broken Access Control
Affected workflowAuthenticated user → restricted action
ImpactUnauthorized access / data exposure
EvidenceReproducible request path
Fix guidanceEnforce authorization checks
RetestConfirm vulnerable path is closed
UserRoleRestricted action
FAQ
Web Application Penetration Testing FAQ
Answers for teams evaluating manual penetration testing for SaaS applications, APIs, authentication flows, access control, and business logic risk.
How is this different from vulnerability scanning?
Scanning identifies known patterns. Manual penetration testing validates real exploitability across authentication, sessions, authorization, roles, tenant boundaries, and business workflows.
What areas are covered in a web application penetration test?
Coverage can include authentication testing, session handling, access control testing, authorization testing, business logic, sensitive data exposure, APIs, and critical workflows.
Do you test SaaS multi-tenant access control?
Yes. Reviews check whether users can cross tenant boundaries, access another organization’s data, abuse role changes, or reach restricted workflows.
What do we receive after testing?
You receive validated findings with user context, affected workflow, reproduction steps, business impact, remediation guidance, and retest criteria.
Can you help validate fixes?
Yes. Retesting confirms whether high-risk paths are closed and gives engineering a clear closeout signal.
Next Step
Identify what attackers would actually find.
Get a focused manual penetration test for your SaaS application, API, authentication flow, or high-risk workflow.
Manual TestingExploit ValidationDeveloper-Ready ReportsRetesting Included