Backend checksAPI security

API & Backend Security Testing

We look through backend and API behavior for the common issues that actually matter: SQLi, XSS, headers, leaked info, auth bugs, WAF behavior, and unsafe responses.

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Backend

Requests, headers, SQLi, XSS, WAF, auth, and exposed info

SaaS platforms

Mobile app backends

Internal admin panels

Customer portals

Coverage

What we cover

A backend review focused on each request, what it returns, what headers say, what information leaks, and whether common bug classes are present.

Request-by-request review of inputs, responses, and behavior

SQL injection and unsafe query handling checks

XSS and reflected input checks where API responses feed a frontend

Headers, cookies, CORS, and security configuration

WAF behavior and whether obvious bad requests are blocked

Leaked information in errors, debug output, stack traces, or response bodies

Overly broad responses, exposed tables, and APIs returning more data than needed

Deliverables

What your team gets

The goal is not just to find issues. The goal is to make the next action obvious.

Expected outcomes

Business value this engagement is designed to create.

Catch obvious backend mistakes before users do

Find exposed info and over-broad API responses

Give developers clear fix notes

Improve login, headers, and request handling

List of tested endpoints and requests

Finding report with severity and impact

Reproduction notes for anything that looks vulnerable

Header and configuration notes

Suggested fixes written clearly

Optional quick retest after fixes

Process

How the engagement runs

A simple flow that keeps the work scoped, safe, and useful for the people who need to act on it.

Scope the API

We agree on the endpoints, test accounts, roles, and actions that are approved for testing.

Review requests

We look at requests, responses, headers, auth behavior, returned data, and common injection points.

Check common bugs

We test for common issues like SQLi, XSS, weak headers, leaked info, WAF gaps, and auth mistakes.

Report clearly

You get clear notes with what was found, why it matters, and how to fix or retest it.

Fit

Engagement models

Start small for a release, go deeper for a full assessment, or shape the work around a partner program.

Quick API check

A focused pass over important endpoints, login, headers, and obvious bug classes.

Full backend pass

A broader review across endpoints, roles, returned data, and backend behavior.

Retest

A quick follow-up after the company fixes the reported issues.

API security

Want this shaped around your company?

Send the target type, timeline, and what you want to protect, test, or roll out. We can turn that into a scoped next step for api & backend security testing.

SaaS platformsMobile app backendsInternal admin panelsCustomer portals

What to include

Share the domain, API, login roles, tool quantities, software seats, or rough scope you already know. If you are not sure yet, send the goal and we can help narrow it down.

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