autosurf script help

I will be purchasing an autosurf script and I need an experienced, competent, and trustworthy coder to check my script and make sure it is secure. Basically I need someone that can go over my script and make sure there are no "back doors" so that no one besides ME will have access to the script. If anyone is familar with 12 Daily Pro, then you know exactly what autosurf programs are. If you go to [login to view URL], you will see a listing of autosurf programs. I need to make sure my script is secure and that the person I bought the script from, didn't put any back doors in it so that they can get back into it and take my members money out. So this is why i need a good coder to make sure the script is VERY secure. Thanks! ## Deliverables Plese go over this script and make sure that it is secure and that there are no back doors for anyone EXCEPT ME to get into my script and change the payment. Install this script on my hosting for me if the company I purchse it from does not do the installing ## Platform This program wil run on a Linux based hosting MySQL