Spyware

Restore the iPhone to factory, not from a backup and set it up as new. Restore your iPhone, iPad, or iPod to factory settings - Apple Support

After that, add your data back manually, do not use a backup and you should be alright.

Best to assume all is compromised, reset all passwords, wipe and re-install OS and apps from known-good distributions, remember to reset the password-reset paths such as the email accounts you use to get password reset requests and the PIN or password associated with your cellular carrier. This includes firmware and passwords for routers and other network-connected devices, too. Having your Apple ID means having all your passwords, if iCloud Keychain was in use. Also check for unrecognized devices associated with your Apple ID, any use of Family Sharing, and any location-tracking approvals, too.

The official Apple doc closest to this : Device and Data Access when Personal Safety is At Risk

I cannot really answer a question about a Mac. You are better off asking that question in the MacBook Pro forum. I'm mostly a PC user, and have just recently gotten a MacBook Air. However, in my opinion, if it was my computer and I felt it could be compromised, I would restore it, hoping I had a backup from before I felt it may have been compromised.