report, it was all caught on tape. where is the entrance? reporter: paris hilton and her boyfriend arrived at the van nuys courthouse to take the witness stand against nathan lee parada, the man accused of trying to break into hilton s home august of last year. before entering the courts a man suddenly lunged at hilton and her boyfriend. one of hilton s security guards stepped in and took the man into custody. oh, my god. that s another intruder who came to my house on a bike. he attacked my security at my home. are you okay? honey, are you okay? are you okay, dude? yeah, i m good. this guy just attacked my boyfriend. who was that guy? are you all right, sweetheart? are you okay, paris? i cannot believe that s the same person that was here. reporter: the man taken into custody is james rainford. rainford was arrested and charged with civil assault charges for showing up at hilton s gated community last october and riding past security guards and failing to sto