THE HILLS star Heidi Montag is adamant she has been targetted by an internet hacker - after a post appeared on her website claiming responsibility for starting a rumour about co-star LAUREN CONRAD’s involvement in a sex tape scandal.

Montag insists a confession claiming she and fiance Spencer Pratt were responsible for fuelling rumours Conrad had made a secret sex tape was fake. The post titled ‘The Truth’ went live on Montag’s site on Monday (15Oct07) night, saying: “Me and Spencer did spread the false rumours about Lauren’s sex tape.” But Pratt tells People.com, “I don’t think (Heidi) would even know how to log in to her website. I don’t even know how to run that. “They’re trying to track down whose IP (address) it was. We got Jack Bauer on it.”

Conrad is at the centre of a sex tape scandal involving ex-boyfriend Laguna Beach star Jason Wahler. She has always denied the tape exists.