@Jens_Rasmussen
Well, that used to be the good old cannon.
Then Disney changed it to Lightsaber bleeding (insanely hard and focused proccess, that corrupted it through pouring hatred and pain into it)

But then..... Because Disney writers is retarded, and they do not understand the concept of effort, they made it literally a passive buff in the show. She did it literally unwillingly just by holding the lightsabet.

So, yeah. Now it literally bleeds your crstal, when an evil hand touches it.