Find out how your defences would perform under a controlled attack. CloudGuard’s Penetration Testing service gives UK organisations an expert-led view of exploitable weaknesses across external infrastructure, web applications and application programming interfaces (APIs). Every finding is manually validated and prioritised, giving your team practical remediation guidance and evidence for customer assurance, cyber insurance and regulatory reviews.
UK organisations are adopting cloud services, customer portals and third-party platforms faster than many internal teams can assess them. Each change can introduce another route into the business. Penetration testing in the UK replaces assumptions with evidence of what can be exploited and what should be fixed first.
Every new cloud service, application or API can create another unchecked route into your organisation. UK businesses often operate across multiple offices, remote teams, cloud environments and suppliers, making ownership harder to track. Forgotten systems, exposed services and unreviewed changes can quietly expand the attack surface.
Automated scanners can produce long lists of possible vulnerabilities. Expert validation confirms which weaknesses are exploitable, what an attacker could reach and which findings matter most. This reflects UK National Cyber Security Centre guidance that third-party testing should be completed by qualified, experienced people rather than treated as a procedural scan.
Development moves quickly and security reviews do not always keep pace. A new customer portal, digital service, integration or API may contain authentication, access control or business logic flaws. Independent testing gives UK organisations evidence before a public launch, major update or connection to sensitive customer and operational data.
UK organisations increasingly need technical evidence for customer due diligence, cyber insurance, procurement and certification. PCI DSS includes testing requirements for applicable environments. UK GDPR requires appropriate security and regular evaluation of security measures, while Cyber Essentials Plus verifies baseline controls but does not replace a penetration test focused on exploitable risk.
We focus on the systems most likely to expose your organisation to attack. Each engagement combines automated discovery with expert-led manual testing, giving UK businesses a clear picture of which weaknesses could be used and what should be fixed first.
We test internet-facing IP addresses, endpoints, firewalls and cloud services, including assets hosted in the UK and other regions. Our consultants examine exposed services, vulnerable components and configuration weaknesses to confirm which issues provide a credible route into your organisation and which carry less practical risk.
We assess authentication, session management, access controls, business logic and user journeys across customer-facing and internal web applications. Manual testing can uncover flaws automated scanners often miss, including weaknesses created by the way features, permissions and user roles interact with personal, financial or commercially sensitive information.
We evaluate REST, GraphQL and SOAP endpoints for weaknesses in authentication, authorisation, data handling and input validation. Testing examines how an API responds when requests are changed or access controls are challenged, showing where sensitive information or restricted functions could be reached through customer, supplier or internal integrations.
Our Open Source Intelligence (OSINT)-led reconnaissance maps what your organisation exposes to the internet, including forgotten subdomains, cloud services and legacy assets. A Free External Exposure Report can establish an initial view before active testing confirms which exposures create a credible route into your UK operations.
Each engagement follows a controlled process with agreed boundaries, clear communication and expert oversight. We only test systems within the confirmed scope. Testing windows, third-party permissions, data-handling requirements and potentially disruptive activity are agreed before active testing begins.
We confirm the assets, objectives, testing boundaries and communication routes with your team. We also identify supplier dependencies, hosting locations and UK business-critical dates. This keeps the engagement focused on the systems and risks that matter instead of applying the same checklist to every environment.
Our consultants use OSINT and technical discovery methods to identify your external attack surface. This stage can reveal forgotten assets, exposed services and unexpected connections across cloud environments, domains and suppliers, helping us confirm that the testing scope reflects what an attacker can see.
We combine automated tools with expert-led manual testing across the agreed scope. Consultants use controlled proof-of-concept techniques where safe, confirming which weaknesses could lead to unauthorised access, sensitive data exposure or further movement through the environment without creating unnecessary disruption to UK operations.
A consultant reviews each finding and places it in context. We remove false positives and low-value scanner noise, leaving a prioritised view of confirmed weaknesses, the systems and information they could affect and any customer, regulatory or operational consequences relevant to your organisation.
You receive a clear report containing technical evidence, risk priorities and remediation guidance. Our consultants talk your team through the findings, answer questions and explain what should be addressed first, so technical owners, leadership and assurance stakeholders can understand and use the results.
Many penetration testing engagements end when the report is delivered. CloudGuard stays focused on what your team needs to do next.
Every finding is reviewed and validated by an expert consultant before it reaches you. Scanner noise and false positives are removed, allowing your team to concentrate on weaknesses that present a credible risk to its systems, services and data.
Your report explains the weakness, provides supporting evidence and sets out the recommended action. You can also speak directly with the consultants who completed the testing, giving your team the context needed to plan remediation and communicate the findings to UK customers, auditors, insurers or senior stakeholders.
If you need an independent view of where your organisation is exposed, CloudGuard’s penetration testing in the UK gives you evidence that an automated scanner report alone cannot provide.
Chief Information Security Officers (CISOs), IT directors, security managers and application security leads receive a validated view of exploitable risk. Findings can support UK board reporting, technical planning, customer assurance and conversations with auditors, insurers or procurement teams without asking internal staff to interpret thousands of unverified scanner alerts.
The service supports UK small and mid-sized businesses and enterprise organisations with internet-facing infrastructure, websites, firewalls, cloud services, web applications or APIs. It is particularly relevant to financial services, legal, insurance, housing, healthcare, professional services and other organisations handling regulated or sensitive information.
Testing may become a priority before an ISO 27001 audit, Cyber Essentials Plus assessment, PCI DSS review, customer assurance exercise or major application launch. Organisations that need a wider assessment of governance and control maturity can combine technical testing with a Security Posture Assessment to build a clearer view of policy readiness and technical exposure.
CloudGuard is embedded in the cybersecurity industry – recognised, accredited, and trusted to protect real organisations every day.
An objective-led exercise that tests whether an attacker could reach a defined target while avoiding detection. It examines attack paths across people, processes and technology instead of focusing on individual vulnerabilities.
Collaborative attack simulation tests how effectively your organisation prevents, detects and responds to controlled attacker behaviour. Your security team is involved throughout, giving them direct experience and immediate feedback.
Expert-led incident scenarios test response plans, decision-making and internal coordination without introducing technical activity into live systems. They help your team understand its responsibilities before a genuine incident occurs.
Penetration Testing ASSESS is a fixed-cost service, with pricing based on the agreed scope rather than an open-ended day rate. External infrastructure, web application and API testing can be priced separately or combined in one engagement. We confirm the UK and overseas assets, testing boundaries, cost and deliverables before work begins.
A vulnerability scan uses automated signatures to identify weaknesses that may be present. A penetration test adds expert-led investigation and controlled exploitation to confirm which vulnerabilities are genuine, how they could be used and what an attacker might reach. The NCSC makes the same distinction between automated identification and qualified human testing. You receive validated findings that can be prioritised according to real risk.
The timeframe is based on the number and complexity of systems included in the scope. We confirm the testing window during engagement initiation, alongside access requirements, UK working hours and key business dates. The engagement covers discovery, active testing, consultant validation and reporting, allowing your team to plan around application releases, audits and customer commitments.
PCI DSS includes penetration testing requirements for applicable environments. ISO 27001 and SOC 2 do not prescribe the same test for every organisation, but independent testing can support evidence that risk-based controls are working. UK GDPR also requires regular testing and evaluation of security measures, although it does not mandate one specific test. Your auditor or assessor should confirm the evidence required for your organisation.
You receive a prioritised remediation plan explaining what needs to be fixed, why it matters and which actions should come first. Your team can complete the work internally or agree further support with CloudGuard. Retesting can then confirm that the weaknesses have been addressed, providing evidence for internal governance, UK customers, insurers, auditors or certification bodies.
Find out what is exploitable before somebody else does. Book a short call with our team to scope your Penetration Testing ASSESS engagement. We will confirm what needs to be tested, how the work will be controlled and what you will receive, giving your UK organisation a clear route to close the weaknesses we identify.
