Sam Lufti seems to be famous for stalking. He was accused of stalking Britney Spears and is still not allowed to communicate with her. He is believed to be one of the reasons Britney had such a meltdown and had to be placed in a Conservatorship. Now, Lindsay Lohan's reps say that he is the person who has been sending text messages and threats to Lindsay while she stays at Betty Ford. The center has taken the threats so seriously they have increased security. Lufti told TMZ that he is not the person who has been sending the messages, but since Lindsay's manager is also Britney's former manager that they are out to get him. He says he knows Lindsay. She says she does not.