What is web application penetration testing?

Web application penetration testing is a hands-on security test of a specific application, your customer portal, dashboard, booking system, or API, looking for the flaws that let someone reach data or actions they should not. It goes past the automated scan and into how the app actually behaves: whether logins can be bypassed, whether one user can read another user account, and whether the business rules can be gamed. You get proof of each issue and a fix list written for your developers.

Is a web application test different from a network penetration test?

Yes. A network test looks at servers, firewalls, and the infrastructure your app runs on. A web application test looks at the app itself: its logins, its logic, its handling of what users type and upload. An app can sit on a perfectly patched server and still let a normal user reach another customer records. Different questions, and serious client or compliance requirements often ask for both.

Can an automated scanner do this instead?

Only part of it. A scanner is good at catching known patterns, an out-of-date library or a missing security header, and we run one too. But the flaws that actually matter in web apps are usually about logic and access: a user reaching data that is not theirs, a checkout step that can be skipped. Those take a person who can reason about how your app is supposed to work, which is the difference between a scan and a real test.

Do you need our source code to test the app?

No. We can test entirely from the outside, the way an attacker would, and most engagements work that way. Giving us logins at a couple of privilege levels makes the test far more thorough, because a lot of the real exposure only shows up once you are signed in. Source code is optional and can deepen the test, but it is never required.

Will testing break or disrupt our live application?

We scope specifically to avoid that. Where the risk of disruption is real, we test against a staging copy or agree careful limits and timing on the live app during scoping. The goal is to find the problems without becoming one, and we plan the engagement around keeping your app up and your data intact.

How much does web application penetration testing cost?

Web application testing is included in our Large Enterprise tier, full scope, which starts at $10,000, and it can also be scoped on its own. The price of a standalone app test depends on how big the application is, how many user roles it has, and how much it does. We publish our tier pricing as a reference point and give you a fixed quote once we have scoped the app together.

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Web Application Penetration Testing

Your customer portal, dashboard, booking system, or API, tested by a person for the flaws automated scanners miss: logins that can be bypassed, one user reaching another user data, checkout logic that can be gamed. You get proof of each issue and a fix list written for your developers, in plain language.

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Manual and automated testing. Transparent pricing. Retest included.

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Web application penetration testing is a hands-on security test of a specific application, run by a person looking for the flaws that let someone reach data or actions they should not have. Having a login page on the internet is not a problem; that is what it is for. A login someone can walk around is the problem, and so is a checkout that can be talked into charging a dollar, or an account page that will show one customer another customer records. Those are logic and access flaws, and they are exactly what a scanner cannot reason about and a real test can. If you want the basics first, start with what a penetration test is.

What we test

The app itself, not just the server it runs on

A web application test looks at how your app actually behaves for a real user, including a signed-in one. Here is what typically lands in scope. Much of it maps to the widely used OWASP Top Ten, the industry list of the most common web application risks.

Login and authentication

The front door of the app. We test whether logins can be guessed, reset, or bypassed, whether multi-factor authentication holds up, and whether a locked door somewhere still has an open window beside it.

Access control

Whether a logged-in user can reach records or actions that belong to someone else, just by changing a number in the address bar. This is one of the most common real-world web flaws, and a scanner walks right past it.

Input handling

What the app does with what people type. We test whether a crafted entry in a form or a search box can make the application run a command or hand back data it should never have exposed.

File uploads and handling

The upload feature that seems harmless until someone sends it something it was not expecting. We check whether an upload can be turned into a way onto the server behind the app.

Business logic and payments

The rules your app is supposed to enforce: prices, quantities, steps in a checkout, approvals. We look for the sequence a normal user could exploit to skip a step, change a total, or get something for nothing.

The APIs behind it

Modern apps talk to a back end through APIs, and those are an attack surface of their own. We test them directly, not just the buttons in the browser, because that is where a lot of real exposure hides.

The single most common serious flaw we look for is boring to describe and easy to miss: a logged-in user reaching a record that is not theirs by changing a number in the address bar. No password cracked, no clever exploit, just an app that trusts the browser too much. A person catches it in minutes. A scanner almost never does.

How it works

From the first call to a confirmed fix

No jargon, no drama, no surprises. Five steps, and you always know what is happening and why. For an app test the important scoping choices are which features and user roles are in play, and whether we work against a staging copy or the live app. We settle both up front.

Curious what the write-up at the end looks like? We walk through it, section by section, in our guide to what a penetration test report looks like.

01

Scope

A short call to agree which application, which features, and which user roles we test, plus whether we work against a staging copy or the live app. Rules of engagement and scope go in writing before anything starts.
02

Test

We test the app by hand as well as with tooling, usually with real logins at a few privilege levels. Automated scanning finds the known patterns; a person finds the logic flaws and the access a scanner cannot reason about.
03

Report

A clear report in plain English: what we found, how serious each item really is, and proof your developers can reproduce. An executive summary for leadership and a technical section the dev team can act on.
04

Fix list

A prioritized, do-this-first remediation list written for the people who will actually change the code. We are happy to walk your developers or your vendor through any finding, in plain language.
05

Retest

Once the findings are fixed, we check the work and confirm the fixes hold. The retest is included on every tier, not billed back as an upsell.

Why manual testing matters

Scanners check patterns. People check intent.

A scanner is a pattern matcher. It is good at spotting an outdated library or a missing header, and we run one on every engagement. But it does not know what your app is supposed to do, so it cannot tell that a normal user just skipped the payment step, or read an order that belongs to someone else. That judgment is what a tester brings, and it is where the findings that actually matter come from.

That gap is the whole case for a real test over a scan. If you are weighing the two, our plain guide to a penetration test versus a vulnerability scan lays it out.

Pricing

What a web application test costs

Web application testing is included in our Large Enterprise tier, full scope across external, internal, web app, and phishing, which starts at $10,000. It can also be scoped on its own. A standalone app test is priced by how big the application is, how many user roles it has, and how much it does, and the quote is fixed once we agree it.

We publish our tier pricing, which most firms will not do, so you have a real reference point before the conversation instead of a mystery number after it.

See full pricing What drives the cost

Testing the app because a client asked?

A lot of app tests happen because a bigger customer put a security questionnaire in front of you, or a cyber-insurance renewal asked about it. If that is what is prompting this, our readiness engagement is built for exactly that moment.

Cyber-insurance readiness

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