Comment Re:this is a mountain out of a mole hill. (Score 1) 375
I use i3lock, which would mean attackers would have to find a way to get into
/usr/bin to usurp my locker
Umm... No. Changing your PATH, setting LD_PRELOAD= or one of many other envs, changing Xsesson scripts or your WM's menu entries... Any of those would do just fine.
You also missed the entire point of the article, that an X11 screen-locker is just a normal user application like any other, a black image over top and only just TRIES to steal focus and input.