Web Application Pentesting - the Security Factory

Let our ethical hackers test your web application,

before someone else does

If your organisation has a web application or API connected to the internet, you should perform a pentest before your vulnerabilities are exploited. Penetration testing is the most effective method for assessing and improving your security level.

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WHAT IS WEB APP PENTESTING?

Find, know and remove your application vulnerabilities

A web application penetration test is a security exercise where our expert pentesters simulate a series of attacks on your web application, API or mobile backend, to find and list your vulnerabilities, their exploitability and their impact on your business.

Our certified experts uncover logic flaws, chained vulnerabilities and business-context risks that automated scanners alone cannot find. Every finding is risk-rated and comes with concrete remediation advice.

With our real-time reporting platform you can follow findings as they are discovered, allowing your development team to start fixing immediately instead of waiting for the final report.

Find and know your security weaknesses

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WHAT WE TEST?

All types of web application testing

We test the security of any application or website you have, looking for vulnerabilities and investigating how far an attacker can penetrate.

Web app penetration test

We look for vulnerabilities and investigate how far an attacker can penetrate your application, covering authentication, session management, injection flaws and business logic.

SQL injection and command injection
Cross-site scripting (XSS)
Broken authentication and session management
Insecure direct object references (IDOR)
Business logic flaws

API security testing

REST, GraphQL, SOAP, we evaluate the security of your APIs, checking for improper authentication, insufficient access controls and data exposure risks following OWASP API Top 10.

Broken object level authorization (BOLA, BOPLA, BFLA)
Mass assignment vulnerabilities
Improper rate limiting
JWT token manipulation
GraphQL introspection abuse

Additional code review

As part of our web application tests, we offer an optional source code review. Testing with source code results in a more efficient test and provides the opportunity to detect much more complex issues.

Cryptographic implementation review
Hardcoded secrets and credentials
Dependency vulnerability analysis
Insecure data handling patterns

Mobile application testing

Focuses on mobile apps (iOS, Android) and their interaction with backend services, checking for insecure storage, weak authentication and data leakage.

Insecure local data storage
Certificate pinning bypass
Reverse engineering and binary analysis
Sensitive data in memory

Auth and access control testing

We attack your authentication and authorisation layer, from password reset flows and MFA bypass to multi-step privilege escalation across user roles.

OAuth 2.0 and SAML weaknesses
Multi-factor authentication bypass
Horizontal and vertical privilege escalation
Password policy and brute force exposure

Fat/thick client testing

Security assessments of desktop applications that interact with backend systems and store sensitive data locally, evaluating encryption, data storage and client-server communication.

Weak encryption and insecure storage
Client-server communication vulnerabilities
Memory analysis and credential extraction
Privilege escalation via client

Have a specific scope in mind?

Schedule a call with one of our advisers who will review your requirements and provide a customised proposal based on your needs.

Get in touch Request a scoping call

OUR APPROACH

What does each approach bring?

A security scan is an automated process that identifies known vulnerabilities by comparing your environment against a database of known threats. It gives you broad coverage quickly and is a great first layer of defence, but it does not confirm whether vulnerabilities can actually be exploited or what their real-world impact is.

A penetration test is expert-led. Our certified pentesters combine tool-assisted scanning with in-depth contextual analysis, actively exploiting vulnerabilities to understand their impact, uncovering logic flaws and complex attack paths scanners cannot detect, and providing detailed insight into the actual risks your organisation faces.

Every pentest is customised to your systems and business logic, not a generic automated report with hundreds of false positives.

Let our pentesters test your application

WORKFLOW

What is the workflow of a penetration test?

Every engagement follows the same proven structure so you always know what to expect and when.

Intake and scoping

Personal meeting to define scope, test type (black, grey or white box), authentication access and dev team coordination.

Penetration test

The assessment is performed within the agreed timeframe. Findings appear in real time on our reporting platform.

Report and review

A comprehensive report is delivered. A review meeting is held to present vulnerabilities and recommended solutions.

Retesting

Once you have addressed findings, you can retest them individually. No need for a full new engagement.

WHY THE SECURITY FACTORY

Certified pentesters, proven quality

Certified ethical hackers

Our pentesters hold OSCP, OSCP+, OSEP, CRTO, CEH and other certifications.

They use the same skills, methods and techniques as real attackers, always with your permission and within an agreed scope.

Real-time reporting platform

You do not have to wait until the end of the test. Findings are pushed to our online platform as soon as they pass internal quality review, allowing you to act immediately.

Retest per finding

Once you have fixed vulnerabilities, you can retest individual findings rather than commissioning a full new engagement. Priced per finding, so you only pay for what you need to verify.

Tailored to your context

Every pentest is scoped to your specific environment, business logic and risk profile. You get a customised assessment, not a generic automated report.

Clear, actionable output

Our reports list your vulnerabilities, their exploitability and their impact, with a concluding assessment and prioritised remediation roadmap your team can act on immediately.

ISO 27001 certified

the Security Factory is ISO 27001 certified. Your network data and business information are handled with the same security standards we enforce for our clients.

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Frequently Asked Questions

Web application penetration testing is a security exercise where certified ethical hackers simulate a series of attacks on your web application, API or mobile backend, to find and list your vulnerabilities, their exploitability and their real-world impact. Common vulnerabilities include design errors, configuration mistakes, injection flaws, broken authentication and business logic weaknesses.

A security scan is automated and identifies known vulnerabilities from a database, providing fast and broad coverage but no confirmation of exploitability. A web app pentest is expert-led: certified pentesters combine scanning with in-depth contextual analysis, uncover logic flaws and complex attack chains scanners cannot detect, and provide detailed insight into the actual risks your organisation faces. Every pentest is customised to your systems and business logic.

A typical web application pentest takes between 3 and 10 business days depending on the scope and complexity of the application. The exact timeline is agreed during the intake meeting, so testing fits your release schedule.

No. We can perform a full black-box test without source code access. However, testing with source code results in a more efficient and more thorough assessment, providing the opportunity to detect much more complex issues that would take far longer to find externally. Source code review is available as an optional add-on.

In a black box test, the pentester starts with no knowledge of your environment, simulating a real external attacker. In a grey box test, the pentester receives limited information such as a user account, which is the most common approach and delivers deep findings efficiently. In a white box test, the pentester has full access to source code and architecture documentation, allowing for the most thorough assessment. Most organisations choose grey box for infrastructure and web app tests, and white box when source code review is included.

We recommend running a full web app pentest at least annually and after any major release, new feature or architectural change. For teams with frequent deployments, aligning pentest cycles with your release process makes the most sense. Penetration testing should be viewed as an ongoing practice, not a one-time event.