Because lots of scripts have backdoors which can be used to steal bitcoins, I offer a service.

Send me a script or program, and I will check if it has any vulnerability, accidental or intentional, which can be used to do damage.
I can check scripts where the source code is available. I can decompile Java and C# bytecodes.

You will not have to pay if I do not find any backdoors. I would appreciate a tip in that case, but it is optional.
I may ask for some caution money depending on the size of the script and your account trust.
Of course, I am willing to use escrow.
I promise that I will not use the script you send me for any other purpose than checking for vulnerabilities, except if you say otherwise.

If you want me to check a script or program, contact me with your offer.