Cloud Storage Security vs Cloud Storage Security (CSS): Side-by-Side Comparison (2026)

Short answer

Healthcare security teams storing genomics or clinical research data in AWS need Cloud Storage Security for one reason: it scans petabyte-scale datasets without egressing data from your environment, which matters when you're handling PHI under HIPAA and HITRUST. The tool covers all major AWS storage surfaces (S3, EFS, EBS, FSx) with daily malware definition updates and audit-ready logging that satisfies 21 CFR Part 11, so compliance reporting actually works. Skip this if your data lives primarily in Azure or GCP, or if you need broader data governance beyond malware detection and PHI tagging. Mid-market and enterprise teams storing sensitive data across AWS S3 and related services need Cloud Storage Security because its malware scanning actually runs inside your VPC, eliminating the risk of exfiltrating data to third-party scanning infrastructure. Fifteen-minute CloudFormation deployment and native integration with GuardDuty, Security Hub, and EventBridge mean you're detecting threats in your storage layer without rebuilding your monitoring stack. Skip this if you need a multi-cloud solution; CSS is AWS-native only, which is exactly why it works so well for shops committed to that ecosystem.