A major US financial institution suffered a cloud data breach that exposed over 100 million customer records. The breach occurred due to a misconfigured Web Application Firewall (WAF) and excessive IAM role permissions on an AWS EC2 instance, allowing the attacker to gain unauthorized access to sensitive S3 buckets. Key prevention steps include enforcing least privilege IAM controls, using Metadata Service v2, and continuous monitoring of security configurations. Zscaler Workload Posture offers solutions for automating security, entitlements, and compliance in cloud environments.

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