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Cloud Security
Penetration Testing Services

Our Cloud security penetration testing services identify exploitable misconfigurations, excessive permissions and attack paths across your AWS, Azure, Kubernetes and Microsoft 365 environments, combining Cloud-native tooling with manual investigation.
Testing

What is a Cloud penetration test?

A Cloud penetration test identifies exploitable weaknesses across your Cloud platforms – including identity and access management, storage and network configuration, and logging and monitoring – that automated scanning alone would not catch.

Unlike a standard infrastructure test, it typically starts from an authorised position, such as read-only console access or an IAM role, reflecting how Cloud environments are actually accessed and how a compromised account or over-permissioned user could realistically be misused.

Our Cloud test assesses your specified AWS, Azure, Kubernetes and Microsoft 365 environments, using both Cloud-native tools and advanced manual testing techniques to identify vulnerabilities and understand the wider risks to your organisation.

Speak to an expert

For more information on how our CREST- and CHECK-accredited penetration testing services can help safeguard your organisation, call us now on +44 (0)333 800 7000 or request a call back using the form below.

Common Cloud misconfigurations we test for

Our Cloud penetration testing covers the services attackers most often target. All tests are manual-first, supported by Cloud-native tools, with evidence-based findings and remediation guidance. Retesting is included to confirm fixes. 

Identified vulnerabilities are presented in a report that allows your organisation to assess business risks and remediation costs, so issues can then be resolved in line with your budget and risk appetite.

Azure security reviews

Identity and access management, subscription and resource misconfigurations, role assignment reviews, privilege escalation paths, storage and networking exposure, and logging and monitoring gaps.

AWS and Kubernetes

IAM policy reviews, S3 bucket and storage exposure, security group misconfigurations, account and logging configuration, cluster configuration and RBAC (role-based access control), exposed services, secrets management, insecure APIs.

Cloud service reviews

Microsoft 365 tenant security assessments, database exposure checks, SaaS (software as a service) configuration reviews.

Cloud infrastructure

Storage, virtual machines, networking and encryption controls across major providers.

Explore all our penetration testing services

View our complete range of application, Cloud, infrastructure and specialist security testing services.

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Cloud vs infrastructure penetration testing

Cloud penetration testing looks at how your AWS, Azure, Kubernetes and Microsoft 365 environments are configured and accessed, identifying misconfigurations, excessive permissions and identity-based attack paths specific to Cloud platforms.

Infrastructure penetration testing covers your on-premise and network infrastructure more broadly, including external and internal network penetration testing.

Many organisations run Cloud and infrastructure testing together, particularly where hybrid environments connect on-premise systems to Cloud platforms.

Understanding the shared responsibility model

Using a trusted provider like AWS, Azure or Microsoft 365 does not mean your Cloud environment is automatically secure.

Under the shared responsibility model, Cloud providers secure the underlying platform and physical infrastructure. Your organisation remains responsible for secure configuration, access control, data protection, monitoring and user permissions – the layer most often exploited and the layer Cloud penetration testing is designed to test.

Because this responsibility is easy to underestimate, misconfigurations here are usually the first place an attacker will look, whether through an over-permissioned role, an exposed storage bucket or a gap in logging that lets an intrusion go unnoticed.

Cloud identity and access risks

Identity is the primary attack surface in most Cloud environments. Compromised credentials, excessive privileges and poorly managed access control are behind the majority of Cloud breaches.

Our testing reviews how identity is managed across your Cloud platforms – including AWS IAM (Identity and Access Management) and Kubernetes RBAC – to identify privilege escalation paths, over-permissioned accounts and gaps in access governance that a vulnerability assessment alone would not catch.

A person working on a laptop computer

Is Cloud security testing right for you?

If you are responsible for your organisation's Cloud environment, you should ask yourself:
  • Are IAM roles and permissions reviewed regularly across your Cloud accounts?
  • Could any storage, databases or services be publicly exposed without your knowledge?
  • Would you detect a compromised account or privilege escalation attempt?
  • Is your Kubernetes RBAC and cluster configuration properly locked down?
  • Do you have visibility of every Cloud asset in use across your organisation?
  • Is your logging and monitoring sufficient to investigate a Cloud security incident?

What access do we need to test your Cloud environment?

Cloud security testing typically requires a different access model to standard infrastructure testing. Depending on scope, this may include:

  • Read-only Cloud console access
  • IAM role or service account access
  • Test or sandbox accounts
  • Tenant access (for Microsoft 365 reviews)
  • Architecture diagrams or asset inventories

Our consultants confirm exactly what’s needed during scoping, so you know what to prepare before testing begins.

Our Cloud security testing process

Our Cloud penetration test follows our proprietary security testing methodology, closely aligned with the SANS and OSSTMM (Open Source Security Testing Methodology Manual) methodologies, adapted for Cloud-native environments.

This service assesses the AWS, Azure, Kubernetes and Microsoft 365 environments you specify. We use both Cloud-native tools and advanced manual testing techniques to assess your security and identify vulnerabilities. Our process typically includes:

  • Scoping – agreeing the Cloud platforms, accounts and access required for testing.
  • Assessment – reviewing configuration, identity and access management, and using Cloud-native tools to map your environment.
  • Manual validation – our consultants manually verify findings, removing false positives and uncovering issues automated tools miss.
  • Exploitation attempts – where in scope, our consultants attempt to exploit identified misconfigurations to demonstrate real-world impact.
  • Reporting – providing a clear report with risk ratings and practical remediation advice for technical and management teams.
  • Remediation guidance and retesting – supporting you to fix identified issues, with retesting included to confirm they have been resolved.

Benefits of Cloud security testing

Our Cloud penetration tests will help you:
  • Identify and understand the misconfigurations and access risks affecting your Cloud environment.
  • Understand the potential business impacts of vulnerabilities across AWS, Azure, Kubernetes and Microsoft 365.
  • Demonstrate a strong security posture to clients by providing third-party assurance that your Cloud environment is secure.
  • Comply with ISO 27001, the GDPR, DORA, the NIS Regulations/NIS2 and the PCI DSS , and other legal and contractual requirements.
  • Protect brand loyalty and corporate image by reducing the likelihood of a Cloud security breach.

How we can help you

CREST- and CHECK-accredited
Our penetration testing services give you all the technical assurance you need.

Straightforward packages
We are pioneers in offering easy-to-understand and quick-to-buy penetration testing.

Choose your test
You can choose the scope of Cloud penetration test to meet your budget and technical requirements.

Reports you can understand
We provide clear reports that can be followed by technical and management teams alike.

Compliant with the Microsoft Rules of Engagement
For Azure clients, this means we take care to limit all penetration tests to your assets, thereby avoiding unintended consequences to your customers or your infrastructure.

Meet the experts behind your Cloud security

60+

Years of combined expertise in Cloud and infrastructure penetration testing 

1000+

Hours of testing each year across AWS, Azure and Kubernetes environments 

1:1

Expert guidance throughout the engagement

~1,500

Active pen test accounts across industries

Book a free scoping session

Hands-on testing | UK-based experts | Dedicated pen tester
Book a free scoping session with GRC Solutions' CREST- and CHECK-accredited penetration testers and get tailored advice on real-world risks across your Cloud platforms and services.

Frequently asked questions

Cloud penetration testing is a manual, evidence-based assessment of your AWS, Azure, Kubernetes or Microsoft 365 environment, designed to identify exploitable misconfigurations, excessive permissions and attack paths that automated scanning alone would miss.

Yes. We test AWS, Azure, Kubernetes and Microsoft 365, along with wider Cloud infrastructure including storage, networking and encryption controls.

This varies by scope, but typically includes read-only console access, IAM role or service account access, test accounts, tenant access and architecture diagrams or asset lists. Your penetration testing expert will confirm the full scoping requirements with you before testing begins.

Cloud penetration testing is carried out in a controlled and authorised manner, with scope agreed in advance so testing stays limited to your specified assets. Our tests also comply with the Microsoft Rules of Engagement, so Azure clients can be confident that testing is limited to their own assets. This minimises the risk of disruption to your live services.

Common findings include overly permissive IAM policies, exposed storage, weak logging and monitoring, misconfigured security groups, insecure Kubernetes RBAC and unmanaged Cloud assets.

We recommend carrying out Cloud security testing at least annually, or after any significant change to your Cloud architecture, new deployments or major configuration updates.

Reports include evidence-based findings ranked by real-world exploitability, along with an assessment of the associated business risk, plus clear remediation guidance. This allows you to prioritise remediation in line with your budget and risk appetite, with a retest included to confirm fixes have addressed the risk.

Cost depends on the scope and complexity of your Cloud environment. Book a free scoping session and we’ll provide a tailored quote based on your platforms and requirements.