GDPR-compliant S3 usage for digital assets - protecting end user data

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Customer success stories
GDPR-compliant S3 usage for digital assets - protecting end user data

The challenge

The client, which operates several well-known brands and a popular social network on AWS public cloud technology, wanted to migrate additional services to increase security. However, the termination of the EU-US Privacy Shield posed a significant business risk as concerns arose about compliance with EU laws when using cloud services. The protection of personal data in social networks became a top priority and required the implementation of legal requirements in technical solutions.

Our solution

Alice&Bob.Company provided comprehensive support to the client and ensured that its cloud services strictly adhered to GDPR requirements. An important aspect was the encryption of all personally identifiable information (PII) both at rest and in transit. One of the biggest challenges was to achieve the secure and encrypted use of the S3 service in conjunction with CloudFront. In particular, providing encrypted S3 assets to authorized non-AWS entities, such as user profile pictures, required the use of pre-signed URLs. However, pre-signed URLs with key rotation were not readily available when using customer-managed keys (SSE-KMS) with Amazon S3.

Cloud technologies used

AWS Lambda

Execute code without server provisioning.

Amazon Elastic Compute Cloud (EC2)

Scalable virtual servers in the cloud.

AWS Key Management Service (AWS KMS)

Managed service for creating and managing encryption keys

Amazon CloudFront

Content delivery network (CDN) for fast data transfer

AWS CloudFormation

Infrastructure as code for AWS resources.

Results

Alice&Bob.Company implemented highly configurable and encrypted S3 buckets utilizing the AWS KMS CMK feature. This implementation provided the customer with flexible access controls to S3 buckets while adhering to best practices for data protection. In addition, a bespoke asset server was developed that allowed the customer to use signed URLs to authorize access to protected assets stored in encrypted S3 buckets within CloudFront. In particular, the solution provided a convenient and maintenance-free approach to automating key rotation, further enhancing security measures.

After a successful collaboration with Alice&Bob.Company's experts, the client was able to demonstrate its commitment to data protection and compliance, ensure a trustworthy platform for its users and strengthen its position as a responsible industry leader.

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