I can do the job. Depending on your budget I can find the author and put him in jail.
Shutting down the website can be done after you provide all details.
There are many ways to skin a cat.
am a penetrating tester so i will find the bug where affected and block the user from all posible means of contact with my parrot Os and samurai web security so i guess am the perfect match for these project and i wil work immediately.