If they where stupid enough to put their FTP info in the hack attempt, then from my point of view you may completely empty his website and replace it with index.htm
and upload a .htaccess with
| Code:: |
<filesmatch "\.(php|html|txt|inc)$">
deny from all
</filesmatch> |
But ofcourse this ISN'T legal !
However i would keep my logs and inform the host about his hack attempt and that i replaced his website due to his stupidity