How to Perform a Cloud Security Audit (+Checklist)

Shifting from on-premise servers to the cloud makes data management significantly more convenient for your organization. However, while the cloud offers more scalability and more flexibility, it also uses a shared responsibility model. With this approach, you’re responsible for keeping your system configured properly to avoid security breaches.

Conducting regular cloud security audits is necessary to keep your systems safe. In a cloud security audit, you’ll conduct a systematic review of your cloud configuration, controls, and security policies to identify possible vulnerabilities and compliance issues.

Here’s a breakdown of how to conduct a cloud security audit, why it’s important, and how professional IT support can make this process easier.

Key takeaways

• Organizations are responsible for protecting and managing the data within their cloud environment.
• Misconfigurations in your cloud environment could lead to costly cyberattacks, data breaches, and compliance violations.
• Conducting regular cloud security audits helps you uncover and address vulnerabilities in your cloud environment before threat actors exploit them.
• A cloud security audit should be comprehensive and address everything from system architecture to cloud-native software programs to activity logs.

Why cloud security audits are essential

Many people assume that when you work with a cloud service provider like AWS, Azure, or GCP, the provider is responsible for handling your data cybersecurity needs. This is a common misconception: while the provider is responsible for securing the cloud as a whole, you are responsible for your organization’s security within the cloud infrastructure.

Within the cloud, there are many cybersecurity risks that organizations should be aware of. These include:

• Misconfigurations: If your cloud environment isn’t configured properly, it could lead to exposed APIs or open storage buckets, which increases the chances of a data breach. 23% of public cloud security issues stem from misconfigurations.
• Lack of visibility: In particularly complex cloud environments, it becomes difficult to track all your assets and user activity, which can allow unseen threats to develop.
• Dynamic environments: Cloud environments see frequent changes in services, instances, and applications, all of which need to be re-secured on a regular basis.
• Identity and access management (IAM) complexity: Many organizations use multiple cloud-based software programs, each of which requires ongoing access management to keep unauthorized users out. Managing permissions and authentication can be time-consuming and challenging.
• Compliance: When building your cloud environment, you’ll need to take compliance requirements into account, such as HIPAA, PCI DSS, GDPR, and CCPA. Effective risk management is key to meeting these standards and preventing breaches that could result in costly fines. 

Conducting regular cybersecurity audits allows you to fix cloud security issues and strengthen your overall cloud security posture. Rather than waiting until after a cyber attack to fix your cloud security issues, you can address them proactively.

Cloud security audits also provide a great opportunity to review your current compliance strategy and make sure your cloud platform adheres to industry standards. These audits can also highlight unused or misconfigured resources, allowing you to optimize your cloud spending and cut back on unnecessary costs.

Key phases of a cloud security audit

A cloud security audit is a multi-step process that requires meticulous planning and execution. Here’s a step-by-step breakdown of the cloud security audit process.

Phase 1: Planning and scope definition

The first step is to determine which aspects of your cloud computing environment you want to audit. Since many organizations use multiple cloud providers and cloud-based software-as-a-service (SaaS) programs, you’ll need to be specific to make sure no data is overlooked.

For example, if you use a multi-cloud environment, specify whether you’ll be auditing each cloud platform separately or auditing the entire cloud system. You’ll also need to consider which cloud-based applications, data, accounts, or service regions need to be audited.

You’ll also need to determine how compliance requirements will fit into your audit. Determine which compliance standards apply to your organization, and what level of cloud security is necessary to meet them.

Finally, set guidelines for who will conduct the audit and how they will document their findings. Some organizations conduct cloud security audits internally, while others hire outside experts to document their findings. You might also choose to set specific benchmarks to measure in the auditing process.

Phase 2: Data collection and assessment

Once you’ve planned your audit, the next step is to collect cloud data from across your systems. This is a multi-faceted process that includes:

• Review cloud architecture and network diagrams: Understand both the logical and physical layouts of your systems. Look for misconfigurations, especially in security controls.
• Examine IAM policies: Review your access controls to see which stakeholders have access to your systems and what data they can access. Look for vulnerabilities that could lead to unauthorized access.
• Assess data storage and encryption: Evaluate how your data is protected both at rest and in transit. Focus in particular on security measures for sensitive data.
• Evaluate network security controls: Check your security tools, such as your firewalls, VPNs, DDoS protection, and security groups, to make sure they’re providing adequate protection against cyber threats.
• Analyze logging and monitoring: Review your logging systems to make sure activity is tracked, stored, and analyzed appropriately. Additionally, confirm that your alert system is configured properly to notify you of abnormal system activity.
• Review application security: Check cloud-native applications in your system for code security, proper API configurations, and effective deployment pipelines.
• Examine backup & disaster recovery strategies: Review your organization’s data backup practices and incident response plans. Are they adequate to withstand unexpected data loss?
• Review physical security: For the most part, it is your cloud provider’s job to keep their servers physically safe. However, you should review their physical security attestations during the audit to make sure they’re meeting SOC 2 and other security best practices.

Certain software tools can help make these cloud security assessments more efficient. For example, you can use Cloud Security Posture Management (CSPM) tools to automate scans of your cloud environment.

Phase 3: Analysis and reporting

After the audit is complete, compile the data you collected and work with your team to analyze it. If you don’t have security experts in-house, consider working with a managed IT services provider to get high-level insights into your cloud performance data.

Start by comparing the current state of your cloud environment against your desired security standards. Look for areas where you aren’t meeting these standards, both in terms of technical vulnerabilities and compliance.

Then, evaluate each vulnerability you found by security risk level, ranking them as critical, high, medium, or low risk. Compile your findings into a concise report that prioritizes vulnerabilities based on risk level and provides possible next steps for remediation. You can then distribute this report directly to stakeholders and work towards the next steps.

Phase 4: Remediation and continuous improvement

The final step in the audit process is to address the vulnerabilities you found to prevent future security incidents. Depending on the results of the audit, this could mean implementing new data protection strategies, reconfiguring your cloud setup, or scheduling more frequent data backups. You might also choose to implement automated tools like CSPM to identify potential threats in real time and improve your overall vulnerability management approach.

After addressing the vulnerabilities you found, schedule another audit to confirm that your new security measures are working properly. From there, schedule audits regularly, either quarterly or semi-annually. Regular audits will help you keep your attack surface to a minimum, even as your cloud environment changes and technology evolves.

Cloud security audit checklist

Because cloud environments are so complex, audits and risk assessments need to be very thorough. Use the following checklist during audits to make sure you’re evaluating every aspect of your cloud security strategy.

Audit Area	Questions to Ask	Notes / Action Items
General Cloud Environment	Is your cloud architecture stable and free of misconfigurations that could expose sensitive information?	Identify and correct exposed APIs or open buckets.
Network Security	Are firewalls, VPNs, and DDoS protections in place and configured properly?	Test each security tool for effectiveness.
Data Security & Encryption	Is data encrypted both in transit and at rest?	Review encryption protocols and certificates.
Logging & Monitoring	Are logs complete, analyzed regularly, and connected to alerts for unusual activity?	Check log retention and alert settings.
Incident Response	Do you have a documented plan for security incidents and data breaches?	Run a tabletop exercise to test your plan.
Application Security	Are cloud-native applications secure and using least privilege access controls?	Audit app permissions and API configurations.
Backup & Disaster Recovery	How often is data backed up, and is your recovery plan current and tested?	Perform a test restore from backup.
Compliance Requirements	Are you compliant with standards like HIPAA, PCI DSS, GDPR, or CCPA?	Cross-check the current setup with compliance checklists.

The value of professional cloud security audits with Diamond IT

While our cloud security checklist provides a starting point, a truly comprehensive and effective cloud security audit requires specialized expertise and advanced tools. If you don’t have these resources in-house, a managed IT services provider like Diamond IT can help.

At Diamond IT, we serve as your IT, cybersecurity, and compliance partner, helping you tackle essential tasks like security audits, system monitoring, software installation and updates, and more. Our team of certified cloud security experts is well-versed in platforms like AWS, Azure, and Google Cloud.

We’ll help you make the most of each cloud security audit with detailed analysis and actionable remediation plans. We’ll also help you integrate CSPM tools, 24/7 monitoring, and a detailed incident response plan to make sure your cloud network is always safe and secure.

With Diamond IT on your side, you can focus on managing your business rather than stressing about your cloud security. You’ll get peace of mind knowing that your cloud environment is secure and that you can avoid costly data breaches. Contact Diamond IT today for a professional cloud security audit and comprehensive cloud security services.