API & Integration Security

Every integration is a key you handed to someone else. We test your APIs, webhooks, tokens, and automations for access nobody meant to leave open.

Modern breaches rarely go through the application. They go through the connection between applications.

Every "Connect your account" button issues a credential that outlives the person who clicked it. Every webhook is an endpoint accepting traffic from the internet. Every automation platform holds keys with more permission than the task requires. Every departed vendor still has a token, because revoking it was nobody's job.

And the team creating these fastest is marketing. A Make scenario here, a Zapier connection there, a CRM sync, a form webhook, an API key pasted into a shared document so the freelancer could get it working before the campaign launched.

What We Test

Object-level authorization. The most exploited API flaw there is: the endpoint verifies that you are logged in, but never verifies the record belongs to you. Change the ID, get someone else's data.

Function-level authorization. Whether standard users can call administrative endpoints that were only hidden from the interface.

Authentication and tokens. Scope, lifetime, rotation, revocation — and what happens to a key when the person who created it leaves.

Rate limiting and enumeration. Whether your endpoints can be walked to extract your customer list one record at a time.

Webhook security. Signature verification, replay protection, and whether your endpoint accepts anything arriving in roughly the right shape.

Data minimisation. APIs returning the full record when the interface displays three fields. Everything in that payload is in the browser, whether it's rendered or not.

Secrets management. Keys in source code, in front-end bundles, in shared documents, in automation platform variables.

Third-party access review. Every integration with access to your systems: what permission it holds, whether it's still in use, and whether the vendor is still a company.

Coverage aligns with the OWASP API Security Top 10 — plus the no-code layer that most testing scopes leave out entirely.

The No-Code Layer Nobody Scopes

Make, Zapier, n8n, native platform integrations. These hold production credentials, move personal data between systems, and are frequently configured by someone who isn't an engineer.

We audit them like infrastructure: what data moves, what permission each connection holds, who can edit the scenario, whether error handling dumps payloads somewhere it shouldn't, and whether a step is still firing against a vendor you stopped using two years ago.

We build these workflows for clients. We know exactly what they're capable of leaking.

What You Get

A map of every integration and what it can reach. Verified findings with reproduction steps. Remediation guidance for both your engineers and your operations team — because half the fixes are configuration, not code.

Questions We Get Asked

We use a managed platform. Isn't API security their responsibility?
They secure their platform. You configure the permissions, issue the keys and write the integrations. That side is yours, and it's where most incidents start.

Do you need our API documentation?
It helps, and its absence is itself a finding. We can work from traffic capture and discovery where documentation doesn't exist — which is common.

Can you test GraphQL?
Yes. GraphQL brings its own problems — introspection left enabled, query depth abuse, over-fetching by design — and we test for them specifically.

Ready to take the first step?