What is a common method of securing data at rest?

Securing data at rest is crucial for protecting sensitive information that is stored on devices or servers. Using encryption to protect stored data is a widely recognized and effective method for achieving this security.

Encryption transforms data into a format that is unreadable to anyone who does not have the decryption key. This ensures that even if unauthorized individuals gain access to the physical storage medium or the data itself, they will not be able to interpret or misuse that data without the proper credentials. Encryption helps maintain data confidentiality and integrity, making it a fundamental practice in safeguarding sensitive information.

While the other options provide important security measures, they primarily focus on preventing unauthorized access or ensuring availability rather than specifically securing data that is already stored. Strong passwords help protect user accounts from unauthorized logins, multi-factor authentication adds an extra layer of security at the access point, and regular backups are essential for data recovery but do not protect the data itself from being accessed or stolen while it is residing on storage devices.