First, same advice as everyone else. Change your passwords. Password managers are great. I like keepass.
Regarding the email, this looks like a Hotmail/Microsoft/Outlook account. Their security page sucks ass. It lists every time someone unsuccessfully tries to log in. "Unsuccessfully" as in they tried your email with an incorrect password. Of course hackers are going to try to break into your account. You really only need to worry about successful logins that aren't you.
Copyleft means: "if you modify the program and share it, you also have to include the source code for your modifications."
The owner of the copyright (usually the developers or their employer) can still change the license later.