The full disk access permission is something you give to backup software.
If you give full-disk access to Meta software running on your main computer, Meta is not going to respect your privacy.
> Friday’s [full-disk access] announcement comes two weeks after tech columnist Jason Aten said that Meta’s new general-purpose AI agent Muse sent him an unsolicited notification referencing a thread between him and a co-worker over Apple Messages. Aten said he never granted Muse permissions to read his messages and had assumed they were off-limits. Social media last week blew up with masses of people who agreed and said the incident showed that AI assistants given access to calendars, emails, messages, shopping accounts, and other resources are akin to a skill saw or other power tool. While potentially useful, they can do real damage if not used carefully.
If you give full-disk access to Meta software running on your main computer, Meta is not going to respect your privacy.
> Friday’s [full-disk access] announcement comes two weeks after tech columnist Jason Aten said that Meta’s new general-purpose AI agent Muse sent him an unsolicited notification referencing a thread between him and a co-worker over Apple Messages. Aten said he never granted Muse permissions to read his messages and had assumed they were off-limits. Social media last week blew up with masses of people who agreed and said the incident showed that AI assistants given access to calendars, emails, messages, shopping accounts, and other resources are akin to a skill saw or other power tool. While potentially useful, they can do real damage if not used carefully.
https://arstechnica.com/security/2026/10/apple-changes-full-...
If you want to know why Apple is suddenly not happy about the way the full-disk access permission is being abused, look no further.