Cybersecurity service
Web Application Security Testing
OWASP-aligned. Business-logic-savvy. Manual where it counts.
Modern web apps are complex — auth flows, multi-tenant isolation, business-logic guardrails, third-party integrations. Automated scanners miss the most expensive bugs. We don't.
What we test
- ▸Authentication, authorization, session management
- ▸Injection (SQL, NoSQL, LDAP, command, template)
- ▸Business-logic flaws (price tampering, workflow bypass, IDOR)
- ▸Multi-tenant isolation + access controls
- ▸Third-party integrations (OAuth, SSO, payment gateways)
- ▸Front-end security (XSS, CSRF, clickjacking, postMessage)
- ▸API security (REST, GraphQL, gRPC)
How we approach this engagement
Each phase is signed into the QSurface provenance chain in real time.
Application Mapping
We learn your app's logic the way a power-user would — before testing for abuse.
Authenticated Testing
Multi-role testing across user tiers. Cross-tenant + privilege-escalation focus.
Business-Logic Exploitation
Where automated tools end, ours begin. Workflow bypass, race conditions, value tampering.
Reporting & Remediation
Reproducible PoCs, severity per OWASP + CVSS, QSurface chain, retests.
What you receive
- ✓Detailed findings mapped to OWASP Top 10 + CWE
- ✓Reproducible PoC scripts where safe
- ✓QSurface provenance chain
- ✓Remediation guidance per finding
- ✓Free retest within 90 days
Why TLN
- ★Manual business-logic testing — not just automated scans
- ★We probe authn/authz with the malice of an actual adversary
- ★Multi-tenant SaaS isolation is a specialty
- ★API + GraphQL native (we run our own GraphQL services)
Best fit for
Ready for a quote?
Tell us your scope. We respond within one business day with a custom proposal — including the QSurface audit-chain artifact your auditors will love.