Elon Musk has made an unsubstantiated claim that Reid Hoffman was a client of sex offender Jeffrey Epstein.Kimberly White/Getty ImagesReid Hoffman said he'd faced threats after Elon Musk fueled a baseless conspiracy theory about him.Musk has amplified claims that the LinkedIn cofounder was a client of Jeffrey Epstein.Hoffman said he regretted his past association with Epstein and has hired security after threats.Reid Hoffman, the cofounder of LinkedIn, said he has received threats of violence — and had to hire security — since Elon Musk fueled a baseless conspiracy theory about him.The Tesla CEO, who worked with Hoffman at PayPal, replied earlier this month to an X post in which a user implied Hoffman had visited convicted sex offender Jeffrey Epstein's private island.Musk replied with the "100" emoji to a post saying: "This guy is TERRIFIED about Trump releasing the Epstein Client list after all his visits to Epstein Island."Musk also made the claim during an October interview with former Fox News anchor Tucker Carlson, in which he said Hoffman was among the "billionaires behind Kamala" who were "terrified" by the prospect of Epstein's client list being made public.Speaking to British newspaper The Sunday Times, Hoffman expressed that Musk has developed a "conviction with no evidence" that he had a close relationship with Epstein."Elon's defamation makes me angry and sad.