SandiBW wrote:
My MacBook has been hacked and locked. How do I make sure whatever is happening is happening only to the MacBook, and has not infected my iMac, iPad, or iPhone? I have shut the MackBook down.
Did you buy this Mac new?
Is it your personal machine or bound to some Enterprise, JAMF, MDM, active directory list (?) work related.
Did you try rebooting into SafeBoot How to use safe mode on your Mac - Apple Support will sort many anomalies
and logging in to test(?)
Reboot as normal and test. When you go to launch Safari.app hold the Option key down, if at that point
Try downloading and running this trusted utility https://www.malwarebytes.com/mac/
Recognize and avoid phishing messages, phony support calls ...
many scams out there...ex