For a year or so I have been receiving emails that are obviously spams and phishing emails that look like (in their content and subject) legit emails.
Here is an example:
I activated an account on Amazon Prime today, and an hour after I received an email titled "Amazon.com" with the subject "Recent modifications on your account etc." and when I open the email I can clearly see it’s some phishing email (the sender email address from Gmail and with some emergency kind of message, saying "click here or your account will disappear" etc.)
I really don’t see how the hacker succeeded in knowing what emails I receive so that he can send lookalike emails just after. Only thing I see is that he has access to my account, but I changed the password and still have the same problem.