Stopping the spread of CP through any means

How would I go about writing a virus that takes down CP websites? I know C and perl, but I've never written a virus or done any Greyhat things before. I'm not asking for a tutorial, but just a few pointers in the right direction to start learning.

Thanks in advanced for the advice.

Websites don't rape children. Defacing some Tor site wont reverse what mapped nor will prevent future rapes. If you want to help the community volunteer in some social service. Your childish rage hurts nobody but yourself.