A growing e$-$commerce company, ShopSecure, handles sensitive customer data, including personal information, shipping addresses, and payment details. The company stores this data in a relational database management system $($RDBMS$)$ and frequently transfers data to a cloud$-$based analytics platform to analyze customer buying patterns. Recently, the company experienced a security breach that exposed some customer information. To prevent this from happening again, ShopSecure must implement a secure data storage and transmission system.

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Secure data at rest in the database to protect against unauthorized access in case of a server breach.

Please ensure that data in transit between internal systems, including the cloud analytics platform, is encrypted to prevent interception.

Could you implement key management best practices to control access to encryption keys?

Please be sure to comply with PCI$-$DSS standards for the security of payment information.

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What encryption techniques should ShopSecure implement for data at rest in their database?

How can they secure data in transit between their systems and the cloud$-$based analytics platform?

What role does critical management play in this scenario, and what best practices should be followed to protect encryption keys?

What are some potential challenges ShopSecure might face in implementing these security measures, and how could they overcome them?