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TIL you can use UserDefaults to access other apps? I knew about AppGroups, but it sounds like they mean brute forcing other applications?

By that same token a public CloudKit implementation should need a reason as well?

V confused.

> TIL you can use UserDefaults to access other apps?

You can't, because App Store apps are sandboxed.

> V confused.

M too.

I think it's because you can get system default information that could be used to fingerprint the device. One example seems to be MDM data.