"Funnyman" Jonah Hill is on the hunt for a computer hacker who's forcing him to apologize to his Hollywood colleagues - after the impersonator started an online feud with Iron Man director Jon Favreau.

The SuperBad star is warning fans he's not logged on to social networking site Twitter.com after discovering someone created an account under his name.

He explains, "I have never been on the website Twitter. Nor will I ever be on the website Twitter. But there is someone who impersonates me on the Twitter and has like 100,000 followers and it's not me. People come up to me like, 'I follow you on Twitter.' And I'm like, 'No, that's not me, that's some kid in Alaska pretending to be me.'"

And Hill has launched a crusade to find the person who's assumed his identity and attacked Favreau online, because he fears the hacker is ruining his chances at becoming a bigger star.

He adds, "One day someone came up to me and said, 'Hey man things are getting pretty heated between you and Jon Favreau, who directed Iron Man, on Twitter.' Apparently this kid is talking trash to Jon Favreau, who I have had two lovely encounters with, who's a lovely guy, who I want to work with by the way... I had to email him like, 'Man, it's not me.' I want to start a fake Twitter for this kid and ruin his life."

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(This news article provided by World Entertainment News Network)