The caveat to the method I will outline is that it creates an encrypted image from the folder and leaves the original intact. Said tool is Disk Utility, and it makes encrypting existing folders on your MacOS machine very easy. You can achieve folder encryption with a third-party application, but there's also a built-in tool that can do this for you. If you are the only person holding the decryption key, it means only you can unlock the data.Īlso: The best encryption software: Protect your data This is called decryption and until that data is decrypted, it cannot be read. What is encryption? Simply put, encryption is the process of encoding information such that the information can only be viewed with the key (think 'password') that was used to encrypt the data.

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Mac os password protect folder