Computer Help and Support

I often get mail from my own email address from people claiming to have broken into my computer.

In particular, the "From" field in email is not secure.

The best thing you can do is to look at all the "raw" email headers and review all the "Received: from" headers to see what email server sent it to the server of your email. Your email server will add a line (when the mail comes in) that records the IP address of the other end.

And yeah, it takes practice to figure out how to read them.

Bottom line is to assume all email is forged and carefully review the URL in any link in email before you click on it. Some email readers make it easy to do this, some don't. Switch email apps until it's easy to see the URL buried in such things.

Or just never click on anything in emails. That works pretty well.