Cloud Security Best Practices: Protecting Your Public Cloud Infrastructure

As more organisations in the UAE, Europe, the UK, Australia, Canada, and the USA adopt public cloud infrastructure to support their business operations, the importance of robust cloud security measures has never been more significant. 

With the ever-growing volume and sophistication of cyber threats, protecting your organisation's data, applications, and infrastructure in the public cloud requires a proactive approach and a comprehensive security strategy. This blog will explore cloud security best practices and principles that can help your organisation safeguard its digital assets, reduce risks, and achieve a resilient and secure cloud environment.

Cloud security encompasses a variety of measures designed to protect an organisation's public cloud infrastructure, data, and applications from cyber threats, ensuring the confidentiality, integrity, and availability of these assets. It involves implementing security policies, procedures, technologies, and best practices to navigate key challenges associated with public cloud computing, including shared responsibility, data privacy, compliance, and ensuring robust access controls.

At Aristiun, we understand the complexities and challenges of securing your public cloud infrastructure, and our security performance and lifecycle management solutions are designed to help your organisation continuously assess, demonstrate, and verify the current state of your cloud security. By prioritising security domains, managing performance across the controls lifecycle, and leveraging state-of-the-art tools and techniques, we enable your organisation to maintain a secure and compliant public cloud environment.

In the following sections, we will explore essential cloud security best practices, ranging from securing data storage and encryption to securing access management and maintaining compliance in the public cloud. By implementing these principles within your organisation's cloud security strategy, you can effectively mitigate risks, safeguard your critical assets, and build a more secure and resilient cloud infrastructure tailored to your unique requirements.

Securing Data Storage and Encryption in the Public Cloud

One of the fundamental aspects of cloud security is protecting the data stored within your public cloud infrastructure. Ensuring data confidentiality and integrity requires robust data encryption protocols and properly configured storage services. Consider implementing the following best practices:

1. Encrypt Data at Rest: Apply encryption to all data stored in your cloud storage services, such as object stores, databases, or file shares. Use encryption features provided by your cloud service provider or third-party encryption solutions to meet security and compliance requirements.

2. Encrypt Data in Transit: Protect your data when transmitted between services or clients by enabling secure communication protocols like HTTPS, SSL/TLS, and IPsec VPN.

3. Regularly Monitor Storage Access: Track access to your cloud storage resources and monitor for unusual activities or potential data breaches leveraging cloud-native monitoring and logging tools.

Securing Access Management and Identity Control

Properly managing access to your public cloud resources is essential for preventing unauthorised access and mitigating insider threats. Implement robust access management policies and practices, including:

1. Implement the Principle of Least Privilege (PoLP): Grant users, applications, and services the minimum access required to perform their functions. Regularly review and adjust privileges to prevent excessive permissions that could lead to security breaches.

2. Centralise Identity and Access Management (IAM): Utilise a centralised IAM service to manage and monitor the creation, deletion, and updating of user accounts, roles, and privileges.

3. Enforce Multi-Factor Authentication (MFA): Require MFA for users and administrators accessing your public cloud environment, adding layer of security and mitigating risks associated with stolen or compromised credentials.

4. Regularly Audit Access Management Policies: Routinely assess and optimise your access management policies to ensure they reflect your organisation's changing needs and adhere to security best practices.

Implementing Network Security Measures

Securing your public cloud network infrastructure is vital for maintaining a robust security posture and protecting against cyber threats. Implement the following network security best practices:

1. Design and Maintain a Secure Network Architecture: Create a well-designed network architecture that segregates and isolates different workloads, utilising virtual private networks (VPNs), security groups, and network access control lists (NACLs).

2. Leverage Cloud-native Security Tools: Use your cloud provider's built-in network security services, such as firewalls, intrusion detection and prevention systems (IDPS), and DDoS protection solutions, to safeguard your network infrastructure.

3. Implement Traffic Filtering: Apply traffic filtering rules that restrict inbound and outbound traffic to only the necessary protocols and ports required for your applications and services.

4. Continuously Monitor Network Activity: Enable logging and monitoring services to detect potential security anomalies, threats, and malicious activities within your network.

Maintaining Compliance and Security Standards

Complying with industry standards and regulatory requirements is crucial when operating in the public cloud. Adopt a proactive approach to maintaining compliance and adhering to security guidelines:

1. Familiarise Yourself with Relevant Regulations: Understand the applicable regulatory requirements affecting your organisation, such as GDPR, HIPAA, or PCI DSS, and ensure your cloud environment adheres to these.

2. Implement a Compliance Framework: Adopt a recognised security framework or standard, such as the NIST Cybersecurity Framework or ISO/IEC 27001, to help guide your compliance efforts.

3. Regularly Assess and Report Compliance: Continuously evaluate your cloud environment against the established standards and requirements, and report on compliance status to your organisation's stakeholders.

4. Adopt Automated Compliance Solutions: Utilise automated compliance tools to monitor your cloud infrastructure configurations and enforce compliance requirements, streamlining your compliance management process.


Protecting your public cloud infrastructure requires a comprehensive security strategy that encompasses robust data protection measures, access management controls, network security mechanisms, and adherence to compliance standards. By implementing these best practices, your organisation in the UAE, Europe, UK, Australia, Canada, and the USA can effectively safeguard its digital assets, mitigate risks, and maintain a secure and resilient cloud environment.

At Aristiun, our security performance and lifecycle management solutions are designed to help your organisation continuously assess, demonstrate, and verify the current state of your cloud security. We empower organisations to prioritise security domains, manage performance across the lifecycle of controls, and leverage state-of-the-art tools and techniques to maintain a secure and compliant public cloud environment. To learn more about how Aristiun can support your cloud security efforts, contact us today and discover our comprehensive suite of cloud security solutions.

Written by : (Expert in cloud visibility and oversight)

Tejvir Singh