A Stanford University graduate has been charged in federal court with extorting his ex-girlfriend — the daughter of Sun Microsystems co-founder and billionaire venture capitalist Vinod Khosla — by threatening to release nude photos of her.

Douglas Tarlow, 27, demanded $73,000 to keep the pictures off the Internet, according to a complaint filed in U.S. District Court in San Francisco. The documents don’t name the alleged victim, but The Smoking Gun identified her as Khosla’s daughter, Nina Khosla, who dated Tarlow from 2008 to 2010.

Despite the break-up, Tarlow went to work for Nina Khosla’s mother, Neeru Khosla, but was fired, authorities said. After his termination, Tarlow spoke about guns, said he was homeless and complained that the company owed him money related to medical bills he incurred while at work, FBI Special Agent Glenn Solomon-Hill wrote in an affidavit.

In September 2012, Nina Khosla received a text message from Tarlow that included a nude photo of her that she had taken during their relationship, followed by another text reading, “Shall I call you Paris,” a reference to socialite Paris Hilton, whose fame exploded after the leaking of a sex tape, the complaint said.

Nina Khosla received several other nude pictures of herself and texts that read, “Expect to see those online in 24 hours. F- you,” the complaint said.

Tarlow also texted a nude picture of Nina Khosla to her mother and sent the mother a text reading, “It seems you’re going to be the mother of the next Paris Hilton,” authorities said.

At one point, Tarlow — who is free on bond — allegedly wrote Nina Khosla in an e-mail, “Everything is going to reddit. From there, it will be impossible to remove from the Internet forever.”