Cloud Security Essentials: Protecting Your Data in AWS, Azure, and GCP

The Shared Responsibility Model

Cloud providers secure the infrastructure - physical data centers, hypervisors, and network fabric. You are responsible for everything you put on that infrastructure: your data, access controls, application configurations, and operating system patches. The number one cause of cloud breaches is misconfiguration, not infrastructure compromise. Understanding where the provider's responsibility ends and yours begins is essential.

Identity and Access Management

IAM is the foundation of cloud security. Use the principle of least privilege for every user, service account, and role. Never use root or owner accounts for day-to-day operations. Require multi-factor authentication for all human users. Rotate access keys regularly and use temporary credentials from services like AWS STS whenever possible. Audit IAM permissions quarterly and remove any that are no longer needed.

Securing Storage

Cloud storage buckets and blobs are the most commonly misconfigured cloud resource. Ensure all storage is private by default. Enable server-side encryption. Use bucket policies and access control lists to restrict access to specific IAM roles. Enable access logging so you know who accessed what and when. Periodically scan for publicly accessible storage - automated tools can find exposed buckets before attackers do.

Logging and Monitoring

Enable cloud-native logging services such as AWS CloudTrail, Azure Monitor, and GCP Cloud Audit Logs. Forward these logs to a centralized SIEM for analysis. Set up alerts for high-risk events: root account logins, IAM policy changes, security group modifications, and data transfers exceeding normal volumes. True Protection can integrate with major cloud platforms to provide unified visibility across your on-premises and cloud environments.