Name Hack "Idea"

I'm not quite sure if this is the place for this post
but I apologize if its not


But what if you were to make a hack,
that whenever you killed someone using hacks
It would show a completely different name on the kill list
Just so no one can report you under your "real s/n" =)

I just wanna know how hard would this be to code?
or if someone has already tried doing this

There is a hack out there that makes your name dissappear on the scoreboard as well as one that makes it appear as if the player you killed is killing himself/herself...