Lol and I changed my password, because when this pop-up-window came I entered my data without thinking. Got the message that I'm not authorized, but with the 2nd attempt I came to the login-page and I could play.
Afterwards I started thinking and thought: hmmm maybe somebody wanted to spy out your account data [:$] and immediately changed my account password.
Good to know that it was at least no trojan or something. [:S]
*beats herself again on the head because of typing her data without thinking about it*[+o(]