According to The Hollywood Gossip, Denise Richards has had to amp up her security in fear that Charlie Sheen might be coming after her again! All this after Richards heard about Sheen's Tweet labeled her a "traitor" and a "dog killer."

Sheen has been on a promotion blitz, advertising everything from TV's to online TV shows but he can still take the time to scare Denise Richards from cyberspace!

Richards shot back calling Sheen a "madman" and says her and her daughters live "simple lives" and prefers to be "safe than sorry"!