Penetration Testing Services

Independent, expert-led security assessments for web applications, APIs, cloud, and network infrastructure. Delivered by a trusted UK consultancy to help you secure your assets and meet compliance.

CREST-Accredited Penetration Testing Services

Fixed-scope quotes following a short scoping call

Penetration testing aligned to audit and regulatory requirements, UK GDPR, PCI DSS, ISO 27001

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    Expert Consultants

    Every assessment is led by highly skilled, CREST and OSCP-certified ethical hackers, guaranteeing a rigorous, compliant, and deeply technical penetration test.

    Complimentary Retesting

    Most agencies charge thousands of pounds to retest patched vulnerabilities. We include a complimentary retest with our engagements, allowing you to verify your fixes without blowing your budget.

    Competitive Rates

    Premium security shouldn't mean unpredictable billing. We provide clear, fixed-scope pricing tailored to your exact environment after a short consultation. You get elite, accredited protection without the hidden fees.

    OUR SERVICES ARE TRUSTED BY ORGANISATIONS WORLDWIDE

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    Types of Pen Testing Services we offer

    Web Application

    OWASP-aligned testing to identify security weaknesses in web applications, portals, and SaaS platforms. Covers authentication, session management, access controls, injection flaws, and business logic.

    Network and Infrastructure

    Internal and external assessments of network infrastructure, services, configurations, and patch levels. Delivered by CREST-registered consultants following PTES methodology.

    Mobile Application

    Static and dynamic analysis for iOS and Android applications. Aligned to OWASP MASVS with coverage of data storage, network communication, and platform interaction.

    API

    Security validation of REST, SOAP, and GraphQL endpoints. Identifies broken authentication, injection, excessive data exposure, and OWASP API Top 10 issues.

    Benefits of Penetration Testing

    Our Penetration Testing Services can help identify and patch security issues before malicious hackers exploit them. Early identification and remediation of security issues are critical to maintaining a secure posture. Understanding potential attack vectors in a networked environment can help an organisation develop effective incident response strategies.



    From Scope to Report – Step by Step

    Get in touch for a consultation.

    Contact a consulting team member 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 team will discuss your requirements in further detail. Our team will ask questions in regards to the following:

    We send your company a Project Proposal

    Our expert consultants will discuss and finalise which digital assets you need testing in the scoping meeting. Based on the requirements, we will then assemble a project proposal and quote and agree on a schedule for conducting the security assessment. Our proposal document will include the following information:

    We start the Penetration Testing

    The Penetration Testing starts. A member of our Penetration Testing team will liaise with a member of your company throughout the entire testing process. You will be the first to know if we have any questions or concerns. Our testing team will be on hand throughout the penetration test lifecycle to answer any questions or concerns. Our tester will:

    You receive your Report and Remediate Issues

    A Penetration Test is useless without a well-written report. Our reports are written in plain English, concise, and thoroughly documented. The Penetration Test Report is typically furnished within 5 days after the testing phase is complete. If you are interested in seeing an example report, please contact our team.

    Each report details the following:

    We test the remediation efforts and update the Report

    At Sencode, we offer free retesting for every Penetration Test we conduct. You fix the issues; then we will verify they can no longer be exploited by an attacker. Our team will arrange a mutually suitable time to conduct the retest, after the remediation efforts have taken place. Our tester will follow these steps:

    Deliver a Security Testing Certificate

    Our clients receive a testing certificate that can be shared with partners and customers, showing that their company takes security seriously. The certificate and document are designed to be easily digested by third-party suppliers, the document removes the technical details and can be safely distributed.

    The Security Testing Certificate is available on request, after the retest has been complete. The security certificate shows:

    Get in touch for a consultation.

    Contact a consulting team member 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 team will discuss your requirements in further detail. Our team will ask questions in regards to the following:

    Consultants are highly trained & certified
    Testing methodologies follow best practices (PTES, OWASP, NIST)
    Reports meet industry compliance and security standards
    Our information security and quality standard policies align with ISO 27001 and ISO 9001, respectively
    CREST-accredited penetration testing helps meet GDPR, PCI DSS, ISO 27001, and DTAC requirements, helping businesses achieve and maintain compliance

    What does choosing a CREST provider mean?

    Get in touch with a member of our team to find out more.

    What is included in our Pen Testing Services?

    Our services include common misconfigurations in modern networks and applications. Here are just some of the vulnerabilities our expert team tests for. For more details on our testing, contact a team member today to arrange a no-obligation consultation.
    Weak or Default Credentials
    Unpatched Software
    API Security Misconfigurations
    Injection Testing
    Session Management Misconfigurations
    Insufficient Segmentation Controls
    Outdated Encryption Standards
    Vulnerability to Man-in-the-Middle Attacks
    Insecure Coding Practices
    Insecure Wireless Configurations
    Weak Password Policies
    Improper Error Handling

    Get a rapid Quote

      Talk to an expert today about our Pen Testing Services

      Advanced scanning combined with expert manual exploitation

      Granular breakdowns of every identified vulnerability

      Clear, step-by-step remediation guidance for every threat

      Easily track and manage your remediations through our secure portal

      Gain a clear, executive-level view of your entire security posture

      Grey, Black and White Box Penetration Testing Services

      At Sencode, we offer Penetration Testing from all test perspectives. If you are unsure which test perspective to use, speak to a member of our team; our experts are on hand to advise.
      Black Box
      Penetration Testing
      No knowledge
      Simulates an external attack
      Real-world attack simulation
      Grey Box
      Penetration Testing
      Partial knowledge
      Balanced approach
      Efficient testing
      White Box
      Penetration Testing
      Full knowledge
      Comprehensive testing
      In-depth analysis

      Common Penetration Testing Service Vulnerabilities

      Our 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 assets have these vulnerabilities?

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

      Our Penetration Testing Methodology

      At Sencode, our Penetration Testing Methodology is a proven, structured framework used by our CREST-accredited ethical hackers to rigorously assess the security of your systems, networks, and applications. It provides a disciplined, repeatable approach that ensures security weaknesses, misconfigurations, and real-world attack paths are identified efficiently and consistently.

      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.

      Penetration Test Reports, Delivered.

      Our comprehensive, professional reports clearly communicate risks, provide detailed remediation guidance, and demonstrate compliance with industry standards. Our deliverables are available through the Sencode Portal or accessible via a downloadable PDF.

      Frequently Asked Questions: Penetration Testing Service

      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 a Penetration Testing Service?

      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

      Is Pen 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. 

      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 delivered 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. 

        Looking for reliable Penetration Testing? Use the contact form below and request a quote today.