Yup, i've worked long enough with senior mgmt to know that anything of interest for prosecution won't be written down, especially not on company devices. Those making the mistakes of writing things down are those actually prosecuted, the ranks and files.
Shady SR mgmt pro tips:
1) phones. In California, you get a lot of protection just calling the guy. Use this. Only call people in California.
2) never lie on an email (regarding money, asking for services, providing services)
3) never lie on a phone (regarding money, asking for services, providing services)
4) lying in person is fine
5) anything that MUST be written down must be deleted after read and have no trace back. (privnote etc)
6) all email services should be hosted overseas (protonmail etc)
> anything of interest for prosecution won't be written down, especially not on company devices
This vastly overestimates the opsec of most tech executives.