I use WP 3.8 with wootheme empire and found this code in my Header.php:
[hacked code removed - please do not post that here]
I put a clean Header.php on the Server and seconds later the Header.php is changed again.
Login with wp-admin is impossible. I can't get on my Installation anymore :-(
Do you have a hint why the mallicious code is back again and where I can search?
I have no clue, what the lines are doing.
Thanks for help!