1. Jessica Biel

McAfee's Most Dangerous

Major buzz about her figure and high-profile relationship with Justin Timberlake makes Jessica Biel an easy target for spammers and hackers. When “Jessica Biel screensavers” was searched, almost half of the sites were identified as containing malicious downloads with spyware, adware and potential viruses. (Photo by Stephen Lovekin/Getty Images)

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15. Kim Kardashi... The biggest reality star in recent months is now susceptible to Internet lurkers too. A search for Kim Kardashian wallpaper and screen savers generated numerous downloads veiled with malware. (Photo by Jason Merritt/Getty Images)
14. Lindsay Loha... McAfee SiteAdvisor flagged Lindsay Lohan screen saver sites as offering a combined 50+ free screen savers infected with Trojans, viruses and spyware. (Photo by Andrew H. Walker/Getty Images for The Weinstein Company)
13. Rihanna Free Rihanna ringtones are some of the most sought after, but some shady vendors mislead those who subscribe by gathering and selling their personal information. (Photo by Amy Sussman/Getty Images for The Griffin)
12. Britney Spea... McAfee SiteAdvisor technology found a single site promoting free Britney Spears wallpaper that was embedded with more than 50 potentially infected downloads. (Photo by Frazer Harrison/Getty Images)
11. Reese Wither... Risky Web sites were identified when searching for “Reese Witherspoon” and “Reese Witherspoon photos” promoting free files with hidden malware. (Photo by Jason Merritt/Getty Images)
10. Brad Pitt Appearing in the top spot last year, Brad Pitt fell towards the bottom of this year’s list, resulting in a few less, but just as dangerous, red and yellow-ranked Web sites. (Photo by Jemal Countess/Getty Images)
9. Ashley Tisdal... The “High School Musical” star is a popular search term when it comes to searching for screensavers. A host of screensaver Web sites contained numerous malware-laden downloads. (Photo by Jason Merritt/Getty Images)
8 (tie). Angelin... Both tabloid fixture Megan Fox and American icon Angelina Jolie resulted in an equal number of risky download Web sites, proving cybercriminals are in the business of capitalizing on the world’s most famous faces. (Photo by Jason Merritt/Getty Images)
8 (tie). Megan F... Both tabloid fixture Megan Fox and American icon Angelina Jolie resulted in an equal number of risky download Web sites, proving cybercriminals are in the business of capitalizing on the world’s most famous faces. (Photo by Frazer Harrison/Getty Images)
7. Miley Cyrus Cybercriminals are using Web sites related to Miley Cyrus’ image to link to other harmful sites containing spyware. (Photo by Jason Merritt/Getty Images)
6. Gisele Bundch... The world’s highest-paid supermodel is a popular target for cybercriminals. A search for “Gisele Bundchen photos” can direct users to red-ranked sites that breached browser security in McAfee’s tests. (Photo by Scott Wintrow/Getty Images)
5. Jessica Simps... Jessica Simpson is as dangerous to search online as she is famous. Searching for “Jessica Simpson videos” can mislead unsuspecting surfers to sites with potentially damaging downloads. (Photo by Alberto E. Rodriguez/Getty Images)
4. Tom Brady The New England Patriot seems to attract many fans who want a free download of the athlete in action, but not the Trojan that comes with it, as identified by McAfee SiteAdvisor technology. (Photo by Mary Schwalm/Getty Images)
3. Jennifer Anis... Hollywood’s favorite leading lady should be searched with caution. More than 40% of the Google search results for “Jennifer Aniston screensavers” contained nasty viruses, including one called the “FunLove virus.” (Photo by Kevin Winter/Getty Images)
2. Beyonce Beyonce tops the MTV Video Music Award nominee list and McAfee’s results as the most frequent, highly-ranked celebrity. Inputting “Beyoncé ringtones” into a search engine yielded a dangerous Web site linking to a distributor of adware and spyware. (Photo by Junko Kimura/Getty Images)
1. Jessica Biel Major buzz about her figure and high-profile relationship with Justin Timberlake makes Jessica Biel an easy target for spammers and hackers. When “Jessica Biel screensavers” was searched, almost half of the sites were identified as containing malicious downloads with spyware, adware and potential viruses. (Photo by Stephen Lovekin/Getty Images)