Web Application Penetration Testing

Our service will evaluate the security of your web applications to identify vulnerabilities and potential threats.

Protect Your Web Application

In today’s digital landscape, the security of web applications is paramount. At Samurai Security, we specialise in comprehensive web application penetration testing, a crucial service for safeguarding your online presence against cyber threats. Our web application pen tests are meticulously designed to identify and address vulnerabilities in your web apps, ensuring robust protection against potential breaches.

CREST Certified

We are a CREST-certified provider, ensuring superior and ethical penetration testing services, and upholding the highest industry standards for cybersecurity.


Comprehensive Report

We offer a detailed comprehensive report following a pen test, outlining identified vulnerabilities and providing clear, actionable insights for enhanced security.

Remediation Plan

​​Our Remediation Plan offers prioritised, actionable steps for resolving identified security issues, ensuring efficient and effective enhancement of your digital security.

Continuous Safeguarding

With ongoing web app pen testing, we can offer continuous protection against evolving cyber threats, maintaining robust and up-to-date security for your digital assets.

Get An Instant Scope and Duration Estimate

Our AI-powered interactive tool will help you determine the scope and estimate the duration of your web application penetration testing project.

What is a web application penetration test?

Web application penetration testing, also known as web app pen testing, is an essential process for assessing the security of web applications. Our application penetration testers simulate cyber-attacks on your web applications to identify vulnerabilities and security weaknesses. This proactive approach is critical in preventing data breaches and maintaining the integrity of your digital assets.

The importance of Web Application Penetration Testing

Penetration testing web applications is not just about finding vulnerabilities; it’s about safeguarding your business’s reputation and compliance. Our web application security testing services are aligned with industry standards, ensuring your applications are resilient against evolving cyber threats.

We help businesses identify security flaws in their web applications, prevent potential security breaches, and improve overall security posture by conducting a thorough penetration test.

Web application penetration testing can assist organisations in meeting industry regulations and standards requiring them to evaluate the security of their web applications.

Key Benefits

Web application penetration testing assists in identifying and correcting security flaws such as insecure coding practices, misconfigured server settings, or flaws in application logic. This can help prevent unauthorised access to sensitive data while protecting the company from financial loss, reputational damage, and legal liabilities.


Our service assists businesses in strengthening their security controls by identifying weaknesses in the security posture of their web applications. This can include implementing authentication, encrypting sensitive data, and other safeguards to make it more difficult for attackers to gain access.


Compliance often necessitates regular web application penetration testing. To protect sensitive data, many industries require regular security testing of web applications. Regular penetration testing can be essential to meet certain compliance requirements and avoid penalties.


Website and API Security Testing

Using advanced techniques mirroring real-world threats, our web application penetration tests simulate cyber attacks to identify vulnerabilities in websites, APIs and apps. This essential practice, a key part of any security strategy, safeguards your online presence from data breaches.

Our CREST-certified experts conduct thorough testing, including Static Application Security Testing (SAST) and Dynamic Application Security Testing (DAST), to uncover weaknesses in both code and operational scenarios, integral to securing your software development lifecycle (SDLC).

Input Security

We ensure you have strong defences in place to protect against threats like SQL injection, XSS, and CSRF through advanced input validation techniques.

API Security Checks

We perform in-depth security evaluations on your APIs to maintain a fortified digital environment.

File Upload Integrity

We assess and help you reinforce the security mechanisms of file upload systems to block malicious file activities.

Data Transfer Safety

We ensure the highest level of data protection is used on your site with top-tier encryption methods and secure data transfer protocols.

Types Of Web Application Penetration Testing

Our methodology for web application penetration testing encompasses various attack vectors. We advocate for a combination of both authenticated and unauthenticated testing methods to guarantee comprehensive identification and documentation of all security risks.

Authenticated Testing

In Authenticated, also referred to as white box testing, our penetration tests delve into your web app’s security from the viewpoint of an attacker who has already bypassed external defences or acquired valid credentials through phishing. This thorough approach reveals the extent of potential damage from a successful cyber attack.

Unauthenticated Testing

Unauthenticated web app testing, also referred to as black box testing, simulates the potential impact of a cybercriminal operating without valid user credentials. This testing method is crucial for uncovering vulnerabilities accessible to any external user, like those found on a login page, offering insights into the app’s external defence mechanisms.

Why Samurai Security?

Samurai Security offers a comprehensive web application penetration testing service that is tailored to your company’s specific needs.

We are an experienced cybersecurity team that uses cutting-edge tools and techniques to simulate real-world attacks and identify vulnerabilities in your mobile application.

Our approach is highly collaborative, and we work closely with our clients to understand their specific needs and deliver actionable, easy-to-understand results.

Our Approach



At Samurai Security, we believe that accurate scoping is the foundation of every successful penetration testing project. That’s why we start by gathering as much information as possible about the system in question. If additional information is needed, we will invite you to complete a scoping document or schedule a scoping call to discuss the requirements in more detail.

Our in-depth scoping document helps us accurately scope your penetration testing assessment. It gathers key information regarding the systems in scope of the assessment. If you prefer, we can fill out this document on a scoping meeting instead.

After completing the scoping document, we peer-review it to ensure accuracy and completeness. If additional information is required, we’ll request a scoping meeting.

In this scoping meeting, we’ll request a screenshare demonstration of the systems in scope, discuss any additional testing requirements and expected outcomes, giving both teams the opportunity to ask and answer questions on the scope and testing approach. Once the scoping has been completed, we conduct a final peer-review process and then share the finalised scope of testing with both parties in the form of a proposal.


Project Agreement

We will provide you with a formal proposal that will include the scope of works, methodology of testing, project timelines, client requirements and commercials. 

In most cases, project timelines will have been agreed in the proposal. However, if timelines have not yet been agreed, Samurai will provide a number of available dates when testing can be conducted. The client will have an opportunity to agree with the proposed dates, or request different dates.

Based on the availability from both teams, we will then formally book in the project and share the final project timelines with all parties. Once the project timelines are agreed, best efforts must be made by both parties to ensure the timelines are adhered to.

Once the project timelines have been confirmed, both teams will work together to gather the technical requirements for penetration testing, these will be covered in the proposal and typically include:


  • Availability of dedicated point of contact

  • Written permission to conduct Penetration Testing

  • Adding our IP address to allow lists on relevant systems

  • Agree on the full technical scope of the assessment

  • Ensure necessary backups have been made prior to testing


Conducting Penetration Testing

We approach penetration testing projects in line with the industry standards such as the OWASP testing methodology, and combine this with our own testing methodology which has been built up from years of experience conducting penetration tests.

We follow a high-level approach:

  • Reconnaissance
  • System Mapping
  • Vulnerability discovery & potential exploitation

To ensure limited impact to operations and critical systems, we will communicate with the client before conducting any extensive scans or running a malicious exploit. We will not conduct any Denial of Service (DOS) attacks unless requested. All of the tools used by Samurai technical team are tested in the lab environment for accuracy and behaviour before they are used in client engagements.

Throughout the assessment, the client will need to be available in order to answer any technical questions and to enable access to the systems in scope. The technical consultants will contact the client immediately if any Critical or High level vulnerability is found.

At the end of each working day, a summary of the testing findings will be sent to the client. If required, meetings are offered to provide context around these findings on the day. Finally, a full email summary of all the findings from the penetration test is sent on the last day testing.




Our output is a comprehensive report that includes:

Scope of Assessment:

We provide a detailed list of the systems, applications, and network components that were tested during the engagement. This helps clients to understand the areas where potential security issues were identified.

Methodology of Penetration Testing:

We provide an overview of our high-level testing methodology and the specific tools and techniques used during the engagement. This helps clients to understand the approach we took and the testing techniques we employed.

Findings and Vulnerabilities:

We provide a comprehensive list of all vulnerabilities discovered during the testing, including their severity rating and the likelihood of exploitation. This information helps clients to understand the potential impact of the vulnerabilities and the risks associated with them.

Remediation Actions:

We provide actionable recommendations for remediation of the discovered vulnerabilities, including prioritisation based on severity. This helps clients to understand the steps they need to take to address the identified security issues.


Technical Meeting

After every engagement, we offer a focused meeting to discuss the assessment and its outcomes. This allows the business and risk owners to ask specific questions and ensure that all parties understand the context of the risks, as well as their likelihood and impact of successful exploitation. The potential mitigation steps will be discussed, allowing for the implementation of robust measures and an understanding of the effort required.


Remediation Plan

A formal document outlining the agreed plan to remediate vulnerabilities, including deadlines and assigned responsibilities for tracking progress. This information presented in a GANTT view provides visibility to the management team and ensures that all necessary actions have been taken to safeguard the business.

Frequently Asked Questions

How long does it take to perform web application penetration testing?

The length of the testing is determined by the scope of the testing. A web application penetration test can typically take 3-6 days.

Will testing have an impact on the performance of my web application?

Our testing methodology is intended to have the least possible impact on the performance of your web application. However, there may be a minor impact on testing performance. We collaborate with our clients to schedule testing during off-peak hours in order to minimise any disruption to their business operations.

What happens if vulnerabilities are discovered during testing?

If we discover vulnerabilities during the testing, we will provide a detailed report outlining our findings as well as our recommendations for remediation. In addition, we can collaborate with our clients to create and implement a remediation plan to address the identified vulnerabilities.

Do you have the ability to test live websites or applications?

We can run tests on live websites or applications. However, to minimise any potential impact on your business operations, we recommend scheduling testing during off-peak hours.

Do your testing methods meet industry standards?

Yes, our testing methods adhere to industry standards such as CREST, CSTM & OWASP.

How frequently should web application testing be carried out?

Web application testing should be done on a regular basis, especially after any major changes to the application or infrastructure. We recommend testing at least once a year or whenever significant changes occur.

Similar Services

Penetration Testing

Identifying vulnerabilities before they become issues

Our service simulates a simulated cyber attack designed to exploit the vulnerabilities of your network.

Vulnerability Assessments

Identifying risks and vulnerabilities

Our service identifies, quantifies, and prioritises the vulnerabilities in your cyber systems.

Get in touch

Let's find a solution

If you want to chat, give us a call: 0121 740 1304

Or, email us: [email protected]