Application security
Web, mobile and API penetration testing — with fixes your developers can ship.
Most breaches still come through the application: a missing access check, a tenant that can read another tenant’s data, an API that trusts the client. We test your web app, mobile apps and APIs the way an attacker would, explain every finding in developer terms, and retest once it’s fixed — so the report turns into safer software, not a PDF in a drawer.
01 / What we test
Authentication, sessions, access control between users and tenants, business logic and the OWASP Top 10.
REST and GraphQL APIs against the OWASP API Security Top 10: object-level authorisation, mass assignment, rate limits, token handling.
iOS and Android apps against OWASP MASVS: local storage, certificate pinning, reverse engineering and the backend they talk to.
LLM chats, AI agents and MCP servers inside your product, tested for prompt injection, data leakage and unintended actions.
02 / Stack
Industry-standard, boring in the good way: tools with a future, that the next engineer will know too.
Web testing
Burp Suite
Intercepting proxy for manual testing
OWASP ZAP
Open-source scanner and proxy
Nuclei
Template-based checks for known issues
Playwright
Scripted flows for authenticated testing
API testing
Postman
Collections for authorised API calls
Schemathesis
Property-based testing from OpenAPI specs
GraphQL tooling
Introspection, batching and depth tests
JWT & OAuth testing
Token, scope and session handling tests
Mobile testing
MobSF
Static and dynamic mobile analysis
Frida
Runtime instrumentation
Objection
Runtime exploration on device
OWASP MASVS
The verification standard we test against
03 / Approach
We start from how your product works and who would attack it, so testing time goes to the parts that matter.
Scanners for the basics; an engineer for access control, logic flaws and tenant isolation, where scanners are blind.
Each issue comes with impact, reproduction steps and a concrete fix in your stack — ready to drop into a ticket.
Once you’ve fixed the issues we test them again and update the report, so you have evidence they’re closed.
04 / Standards
We adhere to industry standards and proven methods on every project — they are what makes the estimate hold.
05 / Infrastructure
Good questions
Straight answers to what buyers ask before they start.
The parts an attacker can reach: authentication and sessions, access control between users and tenants, input handling, business logic, APIs, file uploads, secrets and configuration. WNC tests against the OWASP Top 10, the OWASP API Security Top 10 and, for mobile apps, OWASP MASVS, and agrees the exact scope with you before testing starts.
Related work
Projects and products of ours that involved this service.
Start
Tell us what you’d like tested. A senior engineer writes back with an honest scope and price.
Let’s manage See AI security & red teaming
