How do I report Malicious Sites?

Comodo Secure DNS - DNS Help - DNS
#1

I am wondering how to report Malicious sites to improve Comodo DNS after all we all don’t want to be hacked.

#2

Do the same as here
https://forums.comodo.com/comodo-siteinspector-csi/false-positives-and-exploits-which-are-undetected-t72093.0.html;msg725454#msg725454

Or just provide a broken link.