Our Services

Penetration Testing Services

Looking for reliable penetration testing services? REDSECLABS provides thorough assessments to ensure your systems are secure and resilient to threats.

Web Application Penetration Testing

The purpose of web application penetration testing is to secure your web-based platforms against application-layer threats. In this exercise, we scan your web applications for known and emerging threats, from SQL injection to broken authentication, guided by the OWASP Top 10 and industry best practices.

External Network Penetration Testing

We simulate real hacker behavior targeting your internet-facing infrastructure, helping you figure out and fix vulnerabilities in firewalls, cloud services and more. The goal is to assess how an external threat actor could breach your network perimeter.

Internal Network Penetration Testing

Internal Network Penetration Testing is to understand what an attacker could do after gaining internal data and network access. In this process, our testers test from the perspective of an insider or a compromised device, which helps uncover weaknesses in segmentation, privilege escalation paths and lateral movement within your network.

Mobile App Penetration Testing

The aim of mobile app penetration testing is to protect your mobile users and backend APIs from exploitation. We test Android and iOS apps for insecure data storage, poor session handling, weak encryption, and more by using both static and dynamic analysis techniques.

API Penetration Testing

Application Programming Interfaces (APIs) are the backbone of modern software, which often handles sensitive data and business logic. At RedSecLabs, our API penetration testing services in the UK focus on identifying critical vulnerabilities such as improper authentication, insecure data exposure, broken object-level authorization and injection flaws.

AWS Pentesting

The AWS architecture is comprised of a set of powerful APIs. Deeply integrated into the AWS ecosystem, our security engineers test for a range of AWS-specific misconfigurations.

GCP Pentesting

In our assessments, we go beyond automated scanning to provide an in-depth assessment of your environment. We check for a variety of different vulnerabilities and misconfigurations.

Penetration Testing Approaches We Use

We apply one or a combination of the following testing methodologies based on your project:

Black Box Testing

It simulates an external attacker’s perspective with no prior knowledge of the system being given.

Grey Box Testing

This simulates an insider threat or trusted partner and only partial knowledge is provided (e.g, login credentials)

White Box Testing

Full system knowledge and access are provided and are used for in-depth code reviews or configuration testing.

Why Penetration Testing by REDSECLABS?

Our Scoping Process

We help you plan a penetration test that meets your goals, ensuring that you get the most from your investment.

Our Human-Centered Approach

Just like real hackers, our pen testers use unpredictable methods that a vulnerability scan can't simulate.

Our Actionable Reports

We'll describe what each vulnerability means in your specific environment so you can make effective remediations.

Our CREST-Certified Penetration Testing Process

At RedSecLabs, we follow a diligent and standards-aligned approach to ensure our penetration tests are thorough and actionable. Our testers are CREST-certified, meaning our techniques meet globally recognised standards for ethical hacking and technical assurance. We make sure that the findings are categorized using industry standards such as OWASP Top 10, NIST, PTES, CWE and MITRE ATT&CK. Our advanced pentesting process includes.

Scoping & Objective Setting

We start by understanding your environment, goals and risk appetite. Are you testing for regulatory compliance? Pre-launch validation? A specific threat scenario, or something else?

Reconnaissance & Intelligence Gathering

This is where we gather publicly accessible information about your systems, employees, domains and digital footprint to create a threat map similar to those made by attackers.

Vulnerability Analysis

To uncover exploitable weaknesses in your infrastructure and applications, our team leverages both automated tools and manual analysis.

Exploitation (Controlled & Safe)

Here, we attempt to carefully and ethically exploit the discovered vulnerabilities to indicate real-world risks without harming your systems or data.

Post-Exploitation & Risk Validation

Our assessment measures what a successful exploit could lead to. Could an attacker access sensitive data, take control of your network or disrupt critical operations?

Reporting & Remediation Guidance

Our comprehensive report not only identifies issues, but also offers a remediation roadmap, prioritizing each finding by risk level, business impact and complexity of resolution

Get a Penetration Test Quote Now

Ensure the safety of your network, applications, and systems with RedSecLabs, a trusted name among Crest-accredited penetration testing companies in the UK.

We combine human expertise with advanced automated tools to pin down real-world vulnerabilities before cybercriminals do.

Deep understanding of attacker techniques
In-depth threat analysis with clear remediation advice
Post-engagement support to help you fix issues fast
Transparent, competitive pricing with no surprises
Rated 9+/10 by clients across multiple industries
Crest-accredited penetration companies in the UK

Our Methodology

Scoping & Pre-Engagement

Define success criteria
Set ground rules

Reconnaissance & Vulnerability Assessment

Information gathering & discovery
Device & OS enumeration, port scanning, network sniffing
Vulnerability scanning
Social engineering

Exploitation

Vulnerability verification
Pivoting through system
Elimination of false positives and false negatives

Organizing Findings

Analyze and consolidate findings
Categorize findings according to standard such as OWASP top 10

Reporting

Executive summary
Technical report
Recommended remediations

Validating

Return to confirm IT team's remediations eliminated risks

When Should You Conduct a Penetration Test for your UK business?

We recommend scheduling regular tests based on your company's environment, industry regulations and the security posture of your organization. When it comes to penetration testing, timing is critical to stay ahead of cyber threats. Many organisations delay testing until after a breach — but by then, it’s too late.

After Major Infrastructure Changes

If you have recently migrated to the cloud or upgraded your firewall or VPN, you should test now to ensure new systems or configurations haven’t opened security holes. Because any significant change can introduce potential vulnerabilities

Before Going Live with a New Web or Mobile Application

Thorough security testing is essential to avoid exposing your users or business to zero-day risks after launch. Deploying without it can lead to critical breaches, whether it's a customer portal, e-commerce site, or internal tool.

After a Security Incident or Breach

Once you’ve responded to an attack, it’s crucial to assess what was exploited and whether the vulnerabilities still exist. It's important to validate fixes today and prevent repeat incidents through root cause analysis.

Before a Compliance Audit or Vendor Assessment

Proactive security testing is key when preparing for third-party audits or supply chain entry, as it builds trust and credibility. Penetration testing before any compliance review or vendor assessment helps prove due diligence to clients, partners, and regulators.

When Merging, Acquiring or Expanding A Company

Cyber risks increase during mergers, acquisitions and expansions, necessitating penetration testing to prevent inheriting vulnerabilities or leaving blind spots as your organization grows

On a Regular Schedule (Quarterly or Annually)

Pen testing isn’t a one-off task, because threats evolve and so does your IT landscape. Most compliance standards (like ISO 27001, PCI-DSS and GDPR) require recurring assessments to maintain ongoing protection, meet regulatory requirements and track improvements over time.

What our Customer are Saying

We are trusted numerous companies from different business to meet their needs

“Working as a cybersecurity consultant, Rafay has improved the security posture of Bykea by formulating a Cyber Security Framework for Developers and had worked towards incorporating DevSecOps. He had also contributed towards improving Bykea's vulnerability disclosure program (VDP) by preparing end-to-end process documents and has developed relevant policies to facilitate the organisation's security posture. Given, Rafay's broad experience in a wide range of cyber security domains, he can be a tremendous asset to any organisation.”

Muneeb Maayr CEO, Bykea

“Rafay & was a pleasure to work with. His knowledge of the cybersecurity space was impressive. He helped us build a specific capability we'd been looking at for a while. He was responsive to our questions and quick to turn the work around. He also took our feedback on board and made changes to the work where appropriate. We'd definitely work with Rafay. ”

Ed Hutchinson Company, The Independent

“Rafay is very communicative and responds quickly. He's very knowledgeable on what he does and makes suggestions when it's needed. I felt very comfortable with Rafay performing the pen test in our environment and felt like we were in good hands. I would highly recommend him for any pen testing jobs you may have. ”

Aleks Daranutsa Company, Nhebo

“We are very pleased with the services Rafay provided. He was very professional and his work was outstanding. Rafay went above and beyond during the course of the project. When an unforeseen issue arose mid project, Rafay took the initiative and helped us repair an additional issue, unrelated to the original project. This saved us a considerable amount of time and resources. We will continue working with Rafay on future projects and look forward to a long term.”

Bill Fahy Company, Atlantic Firearms

“Redseclabs has been instrumental in solving Work Generations Cybersecurity challenges. Their expert team provides unparalleled protection and swift responses to potential threats. Their innovative solutions and dedication to client security are truly commendable. Highly recommend Redseclabs for top-notch cybersecurity services.”

Shawana Iftikhar Company, Work Generations

CREST-Certified Pentesting Experts in UK with Real-World Experience

Our penetration testers are CREST-certified, and most of them hold additional credentials including OSCP, CISSP and CEH. They bring frontline experience to every engagement, with backgrounds in ethical hacking, red teaming and cyber forensics.

UK-Based & Industry-Compliant

RedSecLabs operates from the UK and fully complies with data protection laws, including the GDPR and industry-specific standards such as ISO 27001, PCI-DSS and the NHS DSP Toolkit. We understand the local regulatory landscape, whether you’re a financial firm in London, an NHS organization or a tech startup in Manchester.

Business-Focused Remediation Guidance

Our reporting is business-first and focused on the outcome. We rank issues by real-world impact and help your teams implement practical and sustainable fixes.

Trusted by UK Enterprises, SMEs and Public Sector

At RedSecLabs, we offer cost-effective penetration testing without compromising on quality. Our pricing models are built to deliver maximum value for your budget, whether you're a growing startup or an established enterprise.

Competitive Pen Testing Prices

Vulnerability And Remediation Management in the UK

At RedSecLabs, we don’t only help you identify vulnerabilities, but also assist you in fixing them. After the penetration test, we deliver a comprehensive, executive-ready report detailing every risk uncovered, prioritized by severity and real-world impact.

How We Prioritize Vulnerabilities

We utilize scoring systems such as the Common Vulnerability Scoring System (CVSS) along with contextual threat intelligence to identify the risks that are the most significant threat to your specific environment. This approach enables your team to prioritize addressing the most critical vulnerabilities first.

Redseclabs Security Advantages

Premium Penetration testing with competitive pricing

24/7 Incident assistance & security crisis support

Redseclabs has an experienced Incident Response & Security Crisis Support team and is available 24/7 while working with your team and for ongoing post-engagement support.

Extensive cyber security experience

Our team has been extensively trained to rigorously uphold international standards of forensic evidence admissibility, should your security breach be followed by legal proceedings.

Real world manual pentesting techniques

Testing is done by humans instead of automated scanners. We spend large part of time understanding the business logic of the application before testing

Superior skills & experience

Our services are performed only by hand-picked teams of industry experts and senior security specialists, sourced around the globe and not by entry-level employees.

Benefits of Penetration Testing in the UK

Penetration testing is one of the most critical cybersecurity strategies that uncovers hidden threats. At RedSecLabs, we help organizations of all sizes stay resilient, reduce risk and build trust through targeted and realistic pen testing engagements

Strengthen Your Security Posture

Penetration testing identifies exploitable weaknesses in your systems, applications and configurations by simulating real-world attack scenarios, allowing you to fix them before they’re used against you.

Prioritize High-Risk Vulnerabilities

Pen testing helps you focus on what matters most, using contextual risk analysis to highlight vulnerabilities that pose the greatest threat to your business.

Meet Compliance and Regulatory Requirements

Regular pen testing plays a vital role in demonstrating due diligence and security accountability, whether you need to align with PCI-DSS, ISO 27001, GDPR, HIPAA, SOC 2 or FCA regulations.

Avoid Costly Breaches

Penetration testing offers a cost-effective layer of defense by proactively discovering and resolving critical flaws before they can be exploited.

Build Customer Trust

Your clients, partners and stakeholders need assurance that their data is secure. A third-party pen test from a trusted provider like RedSecLabs sends a strong signal that you take cybersecurity seriously

Improve Incident Response

Penetration testing exercises your detection and response capabilities, helping you identify gaps in SIEM, logging, alerting and response protocols. All of which are vital for reducing the impact of any real-world attack.

Frequently Asked Questions (FAQs) Answers

While Vulnerability scanning uses automated tools to detect known issues, penetration testing involves skilled experts actively exploiting vulnerabilities to assess real-world risk. Both have their own benefits, but pen testing provides deeper insight and context

It depends on the scope, complexity and type of the test you are willing to take. At RedSecLabs, we provide timelines during project scoping. Usually, a small web app test takes 2-5 days, while a full network or infrastructure test could span 1-3 weeks

Penetration tests are carefully coordinated to avoid disruption in the business's operations. Our experts follow strict guidelines and can even work after-hours or in pre-production environments to ensure minimal impact.

Pen testing prices in the UK vary based on the scope, depth and the systems that are being targeted. At RedSecLabs, we offer transparent and competitive pricing tailored to your needs

You'll receive a comprehensive penetration test report from RedSecLabs that not only meets compliance requirements (like ISO 27001, GDPR, or PCI-DSS) but also helps improve your long-term security posture. It will include;

Detailed findings (with CVSS scores)
Screenshots and evidence
Business impact insights
Remediation guidance
Executive summary for stakeholders

Most penetration testing can be performed securely and effectively 100% remotely, including web apps, APIs, cloud environments and external infrastructure

CREST is a globally recognised accreditation body for cybersecurity organizations and individuals, mainly in the field of penetration testing. Working with a CREST-certified team like RedSecLabs means you’re partnering with professionals who meet the highest technical and ethical standards.

It completely depends on your assets and risks. If you're planning to launch a web app, go for application testing. If it's about the internal network, you should try infrastructure testing. And if you're unsure about what would be the best, our team can help you choose the right test based on your industry, tech stack and threat model.

Consider performing penetration testing at a minimum, once per year or after a significant change (e.g., new features, cloud migration). This is for small businesses, but regulated industries or high-risk organizations may require quarterly testing or more frequent assessments.

During penetration testing, RedSecLabs often uncovers common security vulnerabilities such as:

Outdated software and unpatched systems
SQL injection and XSS attacks in web applications
Weak authentication mechanisms
Misconfigured servers or cloud environments
Broken access controls
Sensitive data exposure

CREST-Certified Penetration Testing Services in the UK

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What type of testing do you require?

Types of Penetration Testing We Offer in the UK