Emma Watson is the most dangerous celeb on the web

According to online security company McAfee Inc., users searching for downloads of the 22 year old have a one-in-eight chance of landing on a site that can damage their PC or laptop devices.

Followers of Jessica Biel, Eva Mendes, Selena Gomez, Megan Fox, and Sofia Vergara have also been given fair warning – the stars all made the top 10 list.