Cloud PostureCommercial Investigation 8 min read Last reviewed: 2026-10-17
Cloud Storage Misconfigurations: Finding Public S3 Buckets, Open Security Groups & IAM Drift
Why cloud storage permissions and security group rules drift over time—and how read-only Cloud Security Posture Management (CSPM) secures AWS and Azure in minutes.
Written by Eleanor Sterling (Head of Threat Intelligence, HackGuardX UK)
Primary Topic: cloud security posture management uk
Executive Key Takeaways
- Enforce S3 Block Public Access at the AWS account level, not just on individual buckets.
- Audit security groups weekly for 0.0.0.0/0 ingress rules on SSH (22), RDP (3389), and database ports.
- Read-only AWS SecurityAudit and Azure Reader roles allow continuous posture checks with zero operational risk.
1. How Cloud Drift Happens in Fast-Moving Teams
Cloud environments rarely start insecure. Instead, drift creeps in during urgent debugging: an engineer opens port 5432 to test a database migration from home, or makes an S3 bucket public to debug a CORS upload issue—and forgets to lock it back down after the deploy.
Official UK & International Standards Referenced
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