Authorities are concerned that the situation may escalate as internet angry man threatens the internet. He won't show his name, face, or any other identifying information. At this time Qipac News is unsure if that is for his protection because he is actually a pussy, or if it is a stealth ninja tactic.

Things you can do:
Don't engage!
Engaging with him will only increase his powers, as he grows stronger the more people pay attention to him.
Block him!
While you may not be able to block his lightning fast lethal attacks, you can easily block his annoying keyboard strikes with a block.
Don't Care
Just ignore him, he's probably a harmless little pussy angry at the world that he can't deal with his emotions like a functioning human.