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Penetration Testing Service

Our Penetration Testing Service is designed to provide independent assurance that your assets are secure.

Interested in our services? Use the contact form to get in touch. One of our knowledgeable representatives will contact you as soon as possible to assist you with your enquiry.

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    Expert Consultants

    We mandate that all of our Penetration Testers hold CREST CRT (Registered Penetration Tester) or OSCP. This standard guarantees that our testers have the required knowledge to complete a quality assessment.

    Free Retesting

    The clear majority of penetration testing companies charge over £1000 a day to retest an environment. Our penetration testing service comes with free retesting for all penetration testing assessments.

    Competitive Rates

    Our penetration testing services are tailored to provide the best solutions at competitive prices, ensuring protection for companies of all sizes. No company should be priced out of security.

    What is Penetration Testing?

    Penetration Testing often likened to a simulated cyber-attack, involves a team of security experts who examine your infrastructure as if they were real-world attackers trying to breach your company’s defences. This thorough approach aims to objectively evaluate your company’s infrastructure and systems, pinpointing significant security vulnerabilities in software and configurations.

    The techniques and methodologies used by a Penetration Testing Service are tailored to suit the specific context of various digital environments, ensuring a comprehensive and effective security assessment.

    Types of Penetration Testing Services

    Web App Penetration Testing

    You can ensure the security of any online web application, whether internal or public-facing, by conducting comprehensive penetration testing. Our skilled testers follow the OWASP guidelines so that, while simulating an attacker’s behaviours, they may find security problems in your application using an established framework.

    Network Penetration Testing

    Led by expert CREST registered consultants. Our comprehensive Internal and External network infrastructure assessments help build resilience and improve the security posture of your corporate environment.

    VAPT Testing

    Explore comprehensive Vulnerability Assessment and Penetration Testing (VAPT) to safeguard your digital assets from vulnerabilities and cyber threats. Ensure security and regulatory compliance now.

    Mobile Penetration Testing

    Perform static and dynamic analysis of a mobile application for security vulnerabilities. Our mobile application tests ensure the security of any mobile app to the OWASP-MASV Standard alongside our custom methodology.

    Cloud Penetration Testing

    Verify the security of your cloud infrastructure, whether it’s hosted with AWS, Azure, GCP, or any other cloud platform. Our Cloud Penetration Test helps safeguard cloud infrastructure from hackers before they have the chance to act.

    API Penetration Testing

    Guard your API against attacks and misuse with an API Penetration Test. Whether internal or external, we will establish the security of an API and all of its endpoints, leaving no room for it to be exploited.

    Common Penetration Testing Vulnerabilities

    Our Penetration Testing Service can find many of the commonly exploited issues found in modern digital assets.

    Cross-Site Scripting

    XSS vulnerabilities allow attackers to inject malicious JavaScript into the browser of another user. XSS attacks can be crafted to steal session cookies, deface websites, or perform a plethora of other malicious actions against an unsuspecting user.

    Security Misconfigurations

    Security Misconfigurations can occur from many different sources, such as insecure settings on a web server, databases, or web/mobile applications, exposing systems to attacks.

    Weak Password Policies

    Weak Password Policies can make it easy for attackers to brute-force passwords, gaining access to systems or accounts they would have usually been unable to access.

    Outdated Software

    Running outdated or unpatched software can leave systems vulnerable to known exploits. Attackers often scan the internet at scale, searching for low-hanging fruit and using readily available exploits to gain access.

    Exports Ports and Services

    Systems can often expose unnecessary open ports and services to the internet, thereby providing entry points for attackers.

    Weak Encryption

    Using outdated or weak encryption methods for data in transit and at rest can often expose sensitive information to interception and theft.

    Want to find out if your systems have these vulnerabilities?

    Contact a team member today to determine if your system has common vulnerabilities.

    Benefits of a Penetration Testing Service

    Pen Testing can help identify and patch security issues before malicious hackers exploit them. By addressing these vulnerabilities, an organisation can strengthen its overall defences. Early identification and remediation of security issues are critical to maintaining a secure posture. Understanding the potential attack vectors in a networked environment can assist an organisation in developing effective incident response strategies.

    Our Penetration Testing Service Methodology

    A Penetration Testing Methodology is a structured approach used by our ethical hackers to evaluate the security of your organisation’s systems, networks, or applications. A methodology acts as a guided process that the tester follows to ensure that all security misconfigurations have been identified. This process assists in identifying security issues and also strengthens the overall defence mechanisms so that an organisation’s digital assets are well-protected. The method and methodology will change depending on the testing approach taken during the assessment, such as grey, black or white box penetration testing perspectives. 

    Define the assessment’s scope and objectives and the rule of engagement and obtain the necessary authorisation to conduct the evaluation. It’s crucial to establish clear communication channels with the point of contact and agree on testing boundaries.

    The relevant documentation and credentials will be given to the tester to conduct the assessment. Network security teams will be notified of the penetration testing activities. Dedicated contact points will be established to ensure consistent communication between both parties.

    Collect information about the target systems, network and applications. The tester will perform passive and active enumeration of the target systems. This intelligence will help guide the planning and preparation for the vulnerability scanning of the targets.

    The tester will identify known vulnerabilities in the target systems using manual and automated methods. The tester may utilise several vulnerability scanning tools, such as Nmap, Nessus, Burp Suite, or Nuclei, as well as many manual techniques. These techniques allow the tester to collate data about potential attack paths and vectors that may be accessible to them during the exploitation phase.

    The tester will attempt to exploit any identified vulnerabilities and push them to their utmost limits, utilising known methods to exploit the identified vulnerabilities. Scripting and proxy tools are used to manually and automatically manipulate the systems.

    The tester will assess the extent of access gained during the exploitation phase and determine its potential impact. The tester may pivot and explore the compromised environment to further collect evidence of potential privilege escalation vectors. 

    The report will be compiled, and the penetration test results will often be presented to the client during a debriefing, detailing the exploitation steps, impact, and remediation of the identified issues.

    The client will aim to implement the remediation of the identified vulnerabilities shortly after. The tester will retest the target environment to verify that the issues have been resolved and are no longer exploitable.

    What are the next steps?

    Contact us

    Contact a member of our consulting team either by phone, email, or pigeon post. We will then discuss whether we can help you and arrange a scoping meeting to discuss your requirements.


    In the scoping meeting, our expert consultants will discuss and finalise which digital assets you need testing. We will then put together a project proposal and quote based on the requirements and agree on a schedule for conducting the security assessment.

    Penetration Testing

    The testing starts. A member of our penetration testing team will liaise with a member of your company throughout the entire testing process. If we have any questions or concerns, you will be the first to know.

    Report & Remediate

    A penetration test is useless without a well-written report. Our reports are written in plain English, concise and thoroughly documented. Each report will detail an executive summary, risk ratings, a business risk summary and all of the issues we found throughout the engagement.

    Book your retest.

    Here at Sencode we offer free retesting with every penetration test we conduct.

    You fix the issues, then we will verify they can no longer be exploited by an attacker.

    Get a security certificate for your business.

    Just a PDF document with a list of issues? No thank you.

    Our clients receive a testing certificate that can be shared with partners and customers alike. Showing that your company takes security seriously.


    Don’t just trust our word for it, hear what our clients have to say about working with our team.
    Any other business owner will understand that there is no price that you can put on Security. Sencode Cyber Security helped us secure our product and make important decisions to safeguard our customers’ data.
    Lliam Casey
    Director, Phavour
    The team at Sencode are flexible and easy to work with, while also being extremely diligent and professional in what they do. As a result we regard Sencode as a key partner in ensuring our software is properly tested”
    Gary Barnett
    CTO , Huler
    We held a briefing meeting with Callum to demo the system, answer relevant questions, and provide access for the testing. Once the testing was completed the report was efficient and comprehensive.
    Francis Gibbons
    Proj Manager, TCD

    Frequently Asked Questions

    Take a look at our frequently asked questions and find the answers you’re looking for, our FAQ provides clear and concise responses to common inquiries.
    Why is pen testing important?

    A penetration testing service uncovers critical vulnerabilities that are often missed when developing networked environments or digital applications. Despite developers’ best efforts, time, budget, and expertise constraints can leave gaps in IT security. Pen Testing identifies these hidden flaws, secures your digital environment against cyber threats and cyber-attacks, and ensures a more secure and resilient infrastructure as a whole.

    What are the costs of Penetration Testing?

    The penetration testing cost can vary from £1000 to tens of thousands of pounds. It is determined during the project’s scoping and is influenced by factors such as the testing perspective, the volume of IP addresses, and the complexity of the assets. For information regarding penetration test costs, read our detailed blog

    How do I get into penetration testing?

    Penetration Testing is a rewarding career and an attractive option for many technically skilled people. Getting into the industry requires solid foundational knowledge of many subjects, such as networking, TCP/IP, application vulnerabilities, and common security threats facing organisations today.

    Many who start a career in Penetration Testing come from IT backgrounds, but with many self-taught learning labs on offer today, it has never been easier to get your foot in the door. To find out more about this topic, take a look at our “How to start a career in Penetration Testing” blog post.

    Is penetration testing part of vulnerability management?

    Yes, Penetration Testing is a vital component of vulnerability management. Penetration Testing helps to identify vulnerabilities in digital systems by simulating attacks against them. Vulnerability Scanners do not detect all vulnerabilities; some require a skilled professional’s keen eye to identify them. Regular penetration testing should be part of a continuous vulnerability management cycle. 

    What is a black box penetration test?

    Black Box Penetration Testing refers to a type of security testing in which the tester has limited or no prior knowledge of the system tested. A tester will simulate an external attack to find, exploit and verify any vulnerabilities without any information about the network, application, or infrastructure. Black Box Penetration Testing closely mimics the reality of a would-be attacker. 

    Should I use the same penetration testing supplier?

    Using the same supplier can have advantages and disadvantages that organisations should consider.

    Some of the benefits include: 

    * Familiarity with the systems tested can increase efficiency and result in more focused testing.
    * Long-term business relationships can result in favourable rates for the client. 
    * The Penetration Testing provider will often follow the same methodology on each assessment, allowing the client to track improvements more clearly over time. 

    Can penetration testing be done remotely?

    Yes, Penetration Testers can complete many assessments remotely. Web Applications are nearly always accessible over the Internet, so they have few requirements for remote access. Internal Network Infrastructure can be conducted remotely, provided an adequate device has been sent to the location under review or a local device configured for the tester to connect remotely. 

    Assessments that Penetration Testers could do remotely include:

    * Mobile Application Testing
    * Web Application Testing
    * Internal Network Testing
    * External Network Testing
    * API Testing
    * Cloud Security Reviews
    * Red Team Assessments

    Does iso 27001 require Penetration Testing?

    No, ISO 27001 does not explicitly mandate that a company undergo a Penetration Test. However, it emphasises the importance of information security risk management, often including penetration testing as a best practice for identifying and mitigating security risks. 

    Our Penetration Testing Service can help your company comply with ISO 27001.

    How often should penetration testing be done?

    In an ideal world, a company should conduct penetration testing annually to verify that the security controls in place are sufficient. To provide some basic guidance: 

    Annually: At a minimum, a company should budget to conduct a penetration test once a year.
    After significant changes: Major updates or upgrades of a digital asset can often expose it to new vulnerabilities; examples of changes include primary code or infrastructure changes to an application, cloud migrations, or major software updates and system upgrades. 
    Compliance: In many industries, specific regulatory requirements dictate the frequency of penetration testing. To provide an example, PCI-DSS requires penetration testing at least annually and after any significant change. 

    Read the latest from our Cyber Security Blog

    Here, you’ll find a curated list of articles that delve into a wide range of topics, ranging from practical cyber security advice, and deep dives into penetration testing content. Whether you’re looking for the latest industry trends or thought-provoking discussions, our blog has something for everyone.

    What is the OWASP Top 10: Download our flash cards to find out.

    Inside you will find a description of the most common web vulnerabilities.