Use FileVault to Encrypt Data
What is FileVault?
FileVault is encryption built into Mac OS and protects your data if your computer is lost or stolen. CUS enables FileVault on ÈËÆÞÓÕ»ó-owned computers. Learn more about . Follow Apple's guide to on your personal computer.
Make sure your computer has good backups before enabling FileVault and that you follow Apple's guide to securely store your recovery key. If you turn on FileVault and then forget your login password and can’t reset it, and you also forget your recovery key, you won’t be able to log in and your files and settings will be lost forever.