Account takeover
Login, recovery, MFA, or identity transition weaknesses that can let an attacker gain control of user accounts, from password reset flaws to session tokens that outlive their intended lifetime.
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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1Request
2Scope Discussion
3Recommended Review
4Testing
Application SecurityAuthenticationAccess ControlBusiness Logic
attack path
01 Recon
Map exposed flows
02 Auth Testing
Session & token handling
03 Access Control
Role & tenant boundary
04 Chaining
Combine weak findings
05 Business Impact
Confirmed, reproducible
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, often through a parameter or endpoint the UI never exposes but the API still accepts.
Broken Access Control (IDOR)
Object ownership checks fail, exposing records or actions outside the user’s intended access boundary, still one of the most common and most damaging findings in real-world SaaS applications.
Business logic abuse
Valid product actions chained to bypass approvals, limits, billing rules, or workflow restrictions, the kind of abuse that passes every technical validation check while still breaking the business rule behind it.
Tenant isolation failures
Cross-tenant paths where organization context is missing, caller-controlled, or inconsistently enforced, the failure mode that turns a single-customer bug into a platform-wide data breach.
Sensitive data exposure
Customer, operational, or personal data exposed through UI flows, exports, APIs, or over-broad responses, often data the interface never intended to show but the backend still returns.
Authentication weaknesses
Weak login controls, recovery flows, account enumeration, session creation, or credential-handling paths that make account takeover easier than it should be.
Session management flaws
Token lifetime, logout, fixation, refresh, state transition, or session reuse issues that expand attacker reach well past the moment a user thinks they've logged out.
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.
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, following OWASP WSTG and PTES-aligned methodology while staying grounded in how your specific product actually behaves.
Recon & Scoping
Identify attack surface, exposed APIs, authentication flows, user roles, business logic, and sensitive workflows, so testing time goes toward what an attacker would actually target first.
Manual Security Testing
Validate authentication, session handling, authorization, access control, tenant isolation, and business logic by hand, using the same techniques a real attacker would use against your product.
Exploit Validation
Confirm exploitability, business impact, realistic attacker paths, and chained vulnerabilities, so every finding in the report is proven rather than theoretical.
Reporting & Retesting
Provide reproduction steps, remediation guidance, developer-ready reporting, and retest validation, written so engineering can act the same day the report lands.
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, chaining small weaknesses together the way an actual attacker would rather than testing each one in isolation.
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, so nothing gets lost in translation between the security review and the sprint that fixes it.
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
User→Role→Restricted 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