Web Application Penetration Testing
Manual, exploit-driven testing of your web application — the way a real attacker would approach it, with a report your developers can act on.
What we cover
- Authentication, session management, and password/token lifetimes
- Authorization: IDOR, BOLA, privilege escalation, tenant isolation
- Injection: SQLi, XSS, SSTI, template and deserialization abuse
- REST and GraphQL APIs: rate limits, mass assignment, error leakage
- Business logic: payment flows, coupons, quotas, workflow abuse
- File upload, path traversal, and unsafe redirects
- Security misconfiguration and known-vulnerable dependency versions
How we test
We map entry points, user roles, and data flows first — testing follows how your application is actually built, not a generic checklist.
Automated recon triages the surface; humans do the testing. Every reported finding is manually verified — no scanner noise, no false positives.
We prove impact with controlled, reversible exploits so severity is grounded in demonstrated risk, not theory.
Executive summary, full technical detail with proof-of-concept steps, remediation guidance, and a retest of everything you fix.
What you get
- Executive summary mapped to business risk
- Technical report: PoC steps, CVSS severity, evidence
- Developer-ready remediation guidance per finding
- Findings-walkthrough call and a free retest window
The engagement at a glance
A short conversation about your environment. You receive a written scope, timeline, and fixed quote — no obligation.
Testing begins only with your written permission and agreed rules of engagement. Always.
A calendar agreed before we start, with an agreed communication plan while testing runs.
A verification pass over everything you fix — included in the price, not an add-on.
See the full engagement process → and how pricing is scoped in our public pricing guide.
Related research from Hmmnm
Common questions
What is the difference between black, grey, and white box testing?
Black box means we start with no credentials — closest to an outside attacker. Grey box adds a normal user account, which suits testing authorization flaws. White box includes source or config access for the deepest coverage. We recommend the depth in the scoping call based on your goals.
How long does a web application test take?
A focused application typically one to two weeks end to end including the report. Larger platforms, multi-tenant SaaS, or additional APIs extend the calendar — agreed in writing before we start.
Do you test in production or staging?
Either, with your written authorization and rules of engagement. Staging close to production is ideal; when production is the only option, we test carefully within agreed windows and safe techniques.
Want this assessed for your environment?
A short scoping conversation is enough to get a fixed quote. No obligation — a researcher replies.
Start the conversation →