Read, write, and execute permissions overlap to create seven octal permission notations. You can mix and match any of the types to grant seven levels of access, as illustrated below. Permissions control three types of access: reading, writing, and executing. File Permissions Crash CourseĮvery file and folder on your Mac has a configurable set of permissions. Use trial and error to find an adequate level of security that everyone can live with. And if you give users too much power, you risk privilege escalation or worse. Users who are too restricted won’t be able to perform basic tasks.

Of course, it can be difficult to strike a balance between convenience and security when using permissions. Whether you use your Mac in public places or share it with other users, you may want to change the permissions on your documents to ensure the confidentiality and integrity of your data. Utilizing this security control can help protect your data from unauthorized access. Your Mac uses permissions to restrict access to applications, files, and folders. AirPort Apple Apps Backups Developer Education Email Hardware Internet iPad iPhone Mac Music Network Photos Security TV Weekend Wonk

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