CREST-Certified Penetration Testing

Businesses must stay ahead of modern cyber-threats, not merely respond to them, especially as attacks on UK businesses continue to increase at an alarming rate year on year. To aid our Cyber Security auditing, our Penetration Testing service is built around the gold standard in accreditation: CREST (Council of Registered Ethical Security Testers) certification.

The CREST accreditation ensures we conduct our penetration testing under rigorous processes, professional ethics and measurable reportable outcomes, giving you clear assurance that your critical systems, applications or networks are in safe hands and that the results not only highlight any security vulnerabilities you may have, but also give you clear assurance of your critical systems.

Why does CREST Certification matter?

CREST-accredited penetration testing demonstrates you're working with a partner who has met strict criteria in methodology, expertise and legal-ethical standards. Because CREST accreditation is internationally recognised, it helps you demonstrate to stakeholders, clients and customers alike that your cybersecurity posture is credible and independently verified.

CREST-certified penetration testing also ensures that you are complying with industry and regulatory frameworks/standards for cyber & data security, such as ISO 27001, Cyber Essentials, Cyber Essentials Plus, GDPR, NIS2 and others, by validating how your technical defences hold up under real-world attack conditions.

Examples of where CREST-Certified Penetration Testing is functional;

Below are examples of scenarios where a CREST-certified penetration test can deliver significant value:

• External Network Infrastructure: public-facing firewalls, VPN gateways and remote-access systems that form the front line of your business cyber-defence.
• Internal Network Environments: segmentation, lateral movement pathways, Active Directory or enterprise server farms where an internal compromise could cascade.
• Website, Web Applications, CRMs, and Public Portals: authentication flows, API endpoints, transactional modules, and application logic where weaknesses could lead to data breaches or system compromise.
• Cloud Infrastructure and Hybrid Estates: SaaS, PaaS, IaaS platforms (for example, Azure, AWS), where misconfigurations or identity issues could expose your business.
• Mobile and Non-Traditional Platforms: mobile apps, IoT devices or embedded systems that participate in your business services and may not have been subject to rigorous testing.
• Post-Change or Merger/Acquisition Environments: following a significant update, integration of systems or onboarding of new business units, to ensure no gaps or risk exposures remain unaddressed.

Next steps

If your business is looking to raise its cyber-resilience, talk to us about what you are looking to achieve. From Cyber Essentials to ISO27001 accreditation and more, we'll help scope the service to match your business, industry and unique risk profile. Whether it's a complete suite penetration test or a targeted application-level engagement, we work with companies around the world to deliver clarity, confidence and a roadmap for improvement.

Secure your digital future with TwentyFour IT Services, your partner for Cyber Security, where protection goes beyond detection. Reach out to us to book a no-obligation meeting.