AWS S3 Misconfiguration Scanner
Identifies misconfigured S3 buckets with public access.
What is AWS S3 Misconfiguration?
AWS S3 Misconfiguration testing identifies buckets with dangerous access settings: public read/write access, misconfigured bucket policies, overly permissive ACLs, and disabled encryption. S3 misconfigurations have caused numerous major data breaches exposing billions of records.
Why is This Important?
S3 misconfigurations are a leading cause of cloud data breaches. A single misconfigured bucket can expose customer data, credentials, backups, and intellectual property. Attackers actively scan for public buckets. The ease of S3 configuration makes misconfigurations common.
How It Works
1. Cloud Asset Discovery
Inventories cloud resources across AWS, Azure, and GCP including storage, compute, IAM, and networking.
2. Configuration Audit
Analyzes cloud configurations against CIS benchmarks and security best practices for misconfigurations.
3. Risk Prioritization
Prioritizes findings by exploitability and business impact with cloud-native remediation steps.
Key Capabilities
Multi-cloud security posture management for AWS, Azure, and GCP with continuous compliance monitoring.
- Cross-cloud asset inventory and visibility
- CIS benchmark and compliance validation
- IAM policy and permission analysis
- Storage and data exposure detection
- Infrastructure-as-code security scanning
Frequently Asked Questions
What S3 misconfigurations should I check for?
Check for: public bucket ACLs (AllUsers, AuthenticatedUsers), overly permissive bucket policies, disabled block public access settings, missing encryption (at rest), logging disabled, versioning disabled, and cross-account access without MFA.
How do attackers find exposed S3 buckets?
Discovery methods: DNS enumeration (bucket.s3.amazonaws.com), keyword-based guessing (company-backup, prod-data), Certificate Transparency logs, Google dorking, and automated scanning tools. Exposed buckets are found within minutes of misconfiguration.
What are common causes of S3 exposure?
Causes: development buckets promoted to production, misconfigured Terraform/CloudFormation, misunderstanding ACLs vs policies, disabled block public access for 'convenience', legacy buckets predating security controls, and third-party integrations requiring public access.
How do I secure S3 buckets?
Prevention: enable S3 Block Public Access at account level, use bucket policies with least privilege, enable default encryption, enable access logging, use VPC endpoints for private access, implement AWS Config rules for continuous monitoring, and regularly audit bucket configurations.
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