Don't know if this is the correct forum... but here goes.
Some time on the afternoon of 11/09/2005 someone gained access to my account and changed (as far as I can tell nothing else) the index.php file on my wordpress blog.
I noticed this the next day, changed the password to the site, and had tech support restore my userspace from a back up a few days prior.
Aside from the hacker somehow guessing my password, how elese could this have happened? Is there some other security measures I could have taken?