Just curious: how do big executives protect their privacy?

I was thinking about this question because I'm trying to figure out my threat model and a balance between convenience / things i like and protecting my privacy.

How does an executive like Tim Cook protect his privacy? Obviously he has a riskier or more strict threat model to combat threats, such as stalking, hacking, leaking, etc. But obviously he's the CEO of Apple and uses its products.

Does he use Apple Mail like everyone else? Does he use iMessage? …

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