A company must ensure sensitive data at rest is rendered unreadable. Which of the following will the company most likely use?

Encryption is the most suitable method to render sensitive data at rest unreadable by transforming it into an unreadable format using an algorithm and a key. Only authorized users with the correct key can decrypt and access the original data. Hashing creates a fixed-size string of characters from data, but it's a one-way function and cannot be reversed to retrieve the original data, making it unsuitable for data that needs to be accessed later. Tokenization replaces sensitive data with a non-sensitive equivalent (a token), which helps protect data in transit or during processing but doesn't directly render the original data at rest unreadable in its storage location. Segmentation divides a network into smaller, isolated segments to improve security and performance, but it doesn't directly address the unreadability of data itself.