Oh yeah, another weird hack that I only saw once...

After reporting about my encounter with a respawn time hack, I recall another, rather unique, hack.
This was quite a long time ago, I might have the replay in my folder somewhere, but probably not.
A player was essentially wallhacking with a twist. When a player died, instead of showing that the player was shot by someone, like this:

It displayed it as a death, like this:

So what were the advantages to that?
1. Enemy team had no idea who was hacking.
2. A non-shooting death causes your team to lose a kill. The kill count for our team was at 0, despite the fact that many of my teammates had amassed much more kills than that.
This hack might have been patched, I'm just wondering if anyone ever recalls seeing this hack.