(CNN) - Beware when searching for this "Harry Potter" star online, you might get a virus.
Emma Watson is the most dangerous cyber celebrity, according to McAfee, a security technology company.
If you use search terms like "Emma Watson," "Emma Watson and fakes," "Emma Watson and busted," or "Emma Watson and nude pictures," it could lead to web sites designed to steal your personal information or deposit malware.
Searching for actress Jessica Biel is just as risky; she takes the second spot.
Eva Mendes, Selena Gomez and Halle Berry round out the top five on the list.
Women are riskier searches than men.
Late-night host Jimmy Kimmel was the only male in the top 20.