The attack will appear as though someone has left you a comment, but an image similar to the following will appear requesting your password:
The domain used, liv i ejournal.com, is not livejournal.com, and you should not enter your password into any popup like this which appears. The domain used by the attacker could change at any time.
If you have entered your username and password into any popup like this, you should immediately change your password at https://www.livejournal.com/changepassword.bml.
If any content has been deleted from your journal by someone other than you, please submit an abuse request.