The man found hiding in Sandra Bullock’s Hollywood home last month and charged with stalking the Oscar-winning actress allegedly owns an arsenal of weapons, including illegal machine guns. Less than two weeks ago, reality star Kat Von D contacted authorities about a man – against whom she had gotten a restraining order – who allegedly pledged to “go Columbine in Los Angeles” as an act of revenge.

Those incidents are just the tip of the iceberg, security experts and Hollywood insiders say. In a society increasingly obsessed with a famous face, high-profile names are spending billions of dollars a year to beef up their security and stay safe from their over-adoring fans.

Kelly Carlson, star of the former FX series “Nip/Tuck,” says she went through hell two years ago when she was stalked by a number of individuals (for hire) as the result of a past relationship. “My home was broken into multiple times,” Carlson said. “The strange part is that they had a key. I found out later that (a building employee) was paid to give my key to someone while I was away”.

Last month Sandra Bullock’s home was broken into by obsessed fan, Joshua Corbett. The New York Daily News obtained the Corbett search warrant affidavits and found that Corbett had love notes in his possession for Bullock, one of which read “…You are very special to me and without you in my life there is only misery.”

Bullock found Corbett in her home last month on June 8. She discovered him around 1am when she actually came face-to-face with the deranged stalker.Bullock reported that she heard loud banging in the house which prompted her to go close and lock her bedroom door. She then saw 39-year-old Corbett standing in her hallway donned in dark clothing. Bullock reportedly quickly shut the door and called 911. Once the police officers arrived, Corbett reportedly yelled out to Bullock, “… Sandy I’m sorry. Please don’t press charges.”