2 years ago I was hacking websites but never defaced a website or something like this only looked what people have there , was curious . Now this must be a good business for guys who do it . I remember there were websites where people posted their hacked websites with nice pics now seems they will show screenshots with YPN and AS ads Going to think about a few passwords , I have only one for all Control Panels
Do you know of any web sites that the person who installed the script owns? You have the persons "YPN user code" so if you know any of the sites he owns you can check the source of that page to see if the codes match up. At least that way you would know if it was him/her or not. Just a thought