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Database Security

Is DynamoDB Secure? Security Features, Risks, and Hardening

Yes, DynamoDB is generally secure when configured correctly. Here is what you need to know about its built-in protections, common vulnerabilities, and how to harden it for production.

Built-in Security Features

Encryption at rest enabled by default with AWS-managed keys
IAM-based access control with fine-grained policies
VPC endpoints for private network access
Point-in-time recovery for data protection
DynamoDB Streams for change data capture and audit

Common Vulnerabilities

Overly permissive IAM policies granting full DynamoDB access
NoSQL injection through filter expressions with unsanitized input
Data leakage through scan operations returning all table data
Exposed DynamoDB tables through misconfigured API Gateway
Missing encryption with customer-managed keys for compliance

Hardening Checklist

1Use least-privilege IAM policies with specific table and action permissions
2Enable encryption with AWS KMS customer-managed keys for sensitive data
3Use VPC endpoints to keep DynamoDB traffic off the public internet
4Implement fine-grained access control with IAM condition keys
5Enable point-in-time recovery for all production tables
6Use DynamoDB Streams with Lambda for audit trail logging
7Validate and sanitize all filter expression values in application code
8Enable CloudTrail logging for DynamoDB API calls
9Use DAX (DynamoDB Accelerator) within VPC for cached access

Read the complete DynamoDB security guide

In-depth blog post with code examples and best practices

Official DynamoDB security documentation

Frequently Asked Questions

Is DynamoDB secure?

Yes, DynamoDB is generally secure when configured correctly. It includes built-in protections like encryption at rest enabled by default with aws-managed keys. However, common misconfigurations and development patterns can introduce vulnerabilities.

What are the main security risks with DynamoDB?

The most common DynamoDB security risks include overly permissive iam policies granting full dynamodb access, nosql injection through filter expressions with unsanitized input, data leakage through scan operations returning all table data.

How do I harden DynamoDB for production?

Key hardening steps: Use least-privilege IAM policies with specific table and action permissions. Enable encryption with AWS KMS customer-managed keys for sensitive data. Use VPC endpoints to keep DynamoDB traffic off the public internet. Run a security check on your domain to identify specific issues.

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