macOS FileVault
FileVault is a built-in disk encryption feature in macOS that uses XTS-AES-128 encryption with a 256-bit key to secure the entire startup disk. It protects data by encrypting files at rest, requiring a password or recovery key to access the system, and integrates seamlessly with Apple's hardware and software ecosystem. This ensures that sensitive information remains secure even if the device is lost or stolen.
Developers should use FileVault when working on macOS systems that handle confidential data, such as source code, API keys, or user information, to comply with security best practices and regulations like GDPR or HIPAA. It is particularly useful for remote work, device sharing, or in corporate environments where data breaches pose a significant risk, as it provides full-disk encryption without requiring third-party tools.