CREST accredited, expert-led, penetration testing

Get a faster, clearer, and simpler view of your vulnerabilities

Penetration testing is an ethical cybersecurity assessment that safely identifies and reports exploitable vulnerabilities in cloud environments, infrastructure, mobile and web applications, and API’s before they can be maliciously exploited.

Our teams use a mix of automated technologies and human skills to accurately mimic techniques used by cyber attackers targeting organisations in the UK, providing valuable insights for remediation.

Penetration testing helps with compliance, including ISO 27001, PCI DSS, and SOC 2 as well as well as providing crucial evidence of proactive cybersecurity management to insurers.

Book your penetration test scoping call.

What you can expect from CyberKainos penetration testing

– 12 months free re-tests on vulnerabilities we surface

– Engagements can begin within 48 hours

– We get it, businesses are complex environments so if you need to reschedule we will not charge a penalty fee

– You will get real-time visibility of findings even before the final report is ready

CREST certified penetration testers

We use CREST certified professionals who bring extensive experience from across multiple sectors ensuring fast, accurate results.

Get Compliance-Ready Reports

Reports delivered aligned to frameworks including ISO 27001, PCI DSS, and Cyber Essentials Plus. Findings are mapped to your target framework or bespoke criteria.

Built on Standards You’ll Recognise

Every penetration testing engagement at CyberKainos follows internationally-recognised methodologies like OWASP Top 10, never an opaque black box.

Our penetration testing services

Cloud Penetration Testing

We test the cloud the way attackers approach it: from leaked credentials in CI to over-permissive federation roles that move sideways between accounts and providers. Scoped per estate with manual exploitation by CREST-registered testers who are looking for misconfigurations, permission issues, control gaps, and risky exposures in your AWS, Azure, or Google Cloud environments.

External Infrastructure Penetration Testing

Most businesses have a sprawling attack surface and external infrastructure is often the first target for attackers probing defences. From perimeter routers, firewalls, and VPNs to avoidable misconfigurations and exposed APIs, we show how attackers could gain access and how to stop them. Reports satisfy ISO 27001 Annex A.13.1, PCI DSS Req 11.3, NCSC vulnerability management guidance, and Cyber Essentials boundary firewalls, without translation work.

Mobile Application Penetration Testing

A serious mobile vulnerability assessment goes beyond pattern-matching. We deploy advanced testing techniques on iOS and Android apps that simulate real-world attack scenarios, uncovering weaknesses before they can be exploited. Whether your mobile application is in development or already deployed, our penetration testers will surface issues like API misconfigurations, insecure data storage, and authentication weaknesses to enhance your existing security measures.

Web Application Testing

Automated tools are fine for catching known signatures: missing patches, default configs, and long known CVEs. We take things further by manually simulating skilled attackers operating against your customer facing or internal web applications and API’s to find exploitable vulnerabilities across the 10 highest-risk web application vulnerability categories. It is also important to note that ISO 27001, SOC 2, PCI DSS, and FCA SYSC audits accept manual pen test evidence. Scan-only evidence is generally insufficient.

Red Teaming

While penetration tests are great for surfacing vulnerabilities, Red Teaming combines threat intelligence and human-led initiative to recreate the tactics, techniques, and procedures to test your actual resilience, the way an APT or financially motivated criminal would. We demonstrate how access can be gained and how they can move across your environment to provide clear, prioritised actions to reduce risk and harden your defences. Our Red Teaming is mapped to MITRE ATT&CK tactics and techniques, and delivered under STAR-aligned and TIBER-UK methodology.

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Penetration testing FAQs

Why is penetration testing important?

Cybercriminals continuously search for weaknesses in networks, applications, cloud environments, and user access controls. Penetration testing helps organisations proactively identify exploitable vulnerabilities, reduce the risk of data breaches, validate existing security measures, and strengthen incident response capabilities before a real attack occurs.

What are the different types of penetration testing?

Yes, and CyberKainos can deliver penetration testing against all of these environments:

External network
Internal network
Web application
API
Wireless networks
Mobile application
Cloud infrastructure
Social engineering
Physical security

What are the benefits of penetration testing?

Most cybersecurity standards and best practices recommend conducting penetration testing at least annually. Organisations should also perform penetration tests after major infrastructure changes, new application deployments, cloud migrations, mergers, or significant network modifications.

Which compliance frameworks require penetration testing?

Penetration testing is commonly required or strongly recommended for these cybersecurity and compliance frameworks:

PCI DSS
ISO 27001
SOC 2
HIPAA
GDPR
NIS2
Cyber Essentials Plus

Your CyberKainos vCISO will be able to advise you further and help achieve these important certifications quickly.

What happens after a penetration test?

With CyberKainos there is no waiting for a final report. Our real-time reporting gives you live visibility of all findings as soon as they are submitted so you can start fixing critical issues fast. Our post-test remediation checks ensure these vulnerabilities have been resolved while we also offer 12 months of free re-testing on vulnerabilities we surface.