Megan Fox sex tape warning

A 'sex tape' allegedly showing Transformers star Megan Fox is currently being used as bait in an online scam.

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Christopher Boyd of FaceTime Security warned of the hoax in the SpywareGuide Greynets blog.

Links to the supposed video are being left in the Comments section of several YouTube videos, Boyd said, directing surfers to a site called Megantape.com.

When you arrive at the site, it appears all you have to do is press play to see the video.

But when you do, you are actually asked to fill in a survey before you can watch the tape, because, according to a message on the site, "video hosting is expensive".

"Something tells me if a celebrity sex tape was suddenly in circulation, there'd be quite a few more places talking about it than one oddball site asking you questions about Ugg boots," said Boyd.

This isn't the first celebrity 'sex tape' hoax to circulate on the web - Angelina Jolie, Paris Hilton and Britney Spears have all been used as bait in similar scams.