engineering
Detailed web application pen tests from OSCP and CREST certified security experts.
Expert web app pen tests from Bulletproof

Web Apps & APIs
Bulletproof pen tests comprehensively assess the security of authenticated & unauthenticated web apps, and APIs

Crest Certified Security Experts
All Bulletproof security pen testers are independently qualified by industry-recognised certification bodies such as CREST.

Comprehensive Reporting
You’ll receive a comprehensive report complete with remediation advice and guidance. As well as a full debrief call to run through the findings.

Free Vulnerability Scans
Protect your business with 12 months Free vulnerability scans when you choose Bulletproof as your pen testing partner (Up to 8 ext. IP addresses).
Secure your web apps and APIs
Web application penetration testing is used to test websites and their features by safely simulating a cyber attack. Web app pen testing uses the same up-to-date technology that’s used by real-world attackers to critically assess security vulnerabilities, weaknesses and technical misconfigurations in your web apps and APIs. Regular web app pen testing is the cornerstone of any modern security strategy and is vital for keeping your online presence protected against data breaches.


Benefits of web app penetration testing
Bulletproof’s CREST-certified penetration testers will carefully analyse all aspects of your web app and API to methodically uncover your security weaknesses. Every test follows industry best practices, such as OWASP, and is designed to protect what matters most to your business. Bulletproof’s comprehensive after-action reports provide both an easy-to-understand executive summary and a vital technical breakdown.
- Expose vulnerabilities and poor security controls
- Uncover web application security flaws
- Reveal insecure functionality in your app
- Discover security design issues
We understand how dynamic the threat landscape is, which is why we offer 12-months of free vulnerability scanning on up to 8 IP addresses when you book a web app pen test.
Types of web app pen test

Authenticated

Unauthenticated

API
Top 10 vulnerabilities in web app pen tests
Top 10 most common web application vulnerabilities we have found when pen testing:
- Improper Access Controls
- Stored Cross-Site Scripting
- Outdated Website Libraries/Components
- Cross-Site Request Forgery
- SQL Injection
- Reflected Cross-Site Scripting
- CSV Injection
- Arbitrary File Upload
- Server-Side Request Forgery
- Unrestricted File Upload

of web vulnerabilities are a low effort to fix

high likelihood of being exploited
A Bulletproof web application pen testing methodology & service
Scope definition & pre-engagement interactions
Based on your defined goals, we’ll work with you to develop a tailored testing strategy.
Intelligence gathering & threat modelling
In this reconnaissance stage, our experts use the latest groundbreaking techniques to gather as much security information as possible about the web apps and sites in the remit.
Vulnerability analysis
Using the latest tools and sector knowledge, we’ll uncover what’s making your critical assets vulnerable and at risk from attack.
Exploitation
Using a range of custom-made exploits and existing software, our penetration testers will test all core infrastructure and components without disrupting your business..
Post-exploitation
The team will determine the risks and pivot to other systems and networks if within the scope of the test. All compromised systems will be thoroughly cleaned of any scripts.
Reporting
Our security team will produce a comprehensive report with their findings. Once received, we’ll invite you for a collaborative read through. You’ll have the opportunity to ask questions and request further information on key aspects of your business..
Here’s what our customers say about us

This was a very straightforward process. I had enough information up front to understand the process, and did not need to ask many questions along the way. Great service!
Jonathan Lochhass Quantuvis, Chief Operating OfficerGet in touch for a free quote today
If you are interested in our services, get a free, no obligation quote today by filling out the form below.

Penetration Testing Case Study
Learn how a Bulletproof pen test helped Traced create a chain of trust, improve its security posture, and inspire customer confidence.
Frequently asked questions
A web application penetration test is a comprehensive security review where our team of specialised and accredited pen testers takes on the role of a cyber criminal. They’ll attempt to uncover and exploit security vulnerabilities and misconfigurations in your website or a specific web application. Web application penetration testing provides vital information on how to secure your web app and, ultimately, helps keep your organisation secure online.
Whilst all web app penetration tests have the same goal of uncovering security weaknesses, there are different areas to consider:
- Authenticated tests analyse the security of your web app from a privileged user perspective.
- Unauthenticated tests mean that our penetration testers hunt for security weaknesses without access to user credentials.
- API tests are a vital component to include if your web application has an API. Penetration testing a web app’s API uses slightly different tools, and techniques. It is often covered separately from the scope of a web app test.
Bulletproof recommends a blend of all three testing types to get the most value from your penetration testing engagement and understand all the risks.
Bulletproof believes in working to the very best standards, so all our web application tests include the Open Web Application Security Project (OWASP) Top 10 vulnerabilities as a minimum. We use a blend of advanced automated tools and manual expertise to uncover security weaknesses. This includes code injection, broken authentication, misconfigurations, XSS, and much more.
To scope a web application penetration test and for an organisation to get the most value out of the test, the tester would first need to establish the rules of engagement and what the end goal is for the web app pen test.
A scope would include gathering as much information about the target as possible, identifying all the web applications that require testing, and whether the test will be authenticated or unauthenticated.
We approached Bulletproof as one of several suppliers who offer penetration testing services. Out of all those contacted, Bulletproof were by far the most professional and slick to work with. From start to finish, the whole process was painless and ran like clockwork. The conclusive pen test report was succinct with clear steps of resolution provided. We were genuinely impressed with how easy Bulletproof were to work with, and would definitely recommend.
Eleanor Blacklock KURVE, Product Manager