Riskiest Web Celebs

Jessica Biel beat out 2008's top star, Brad Pitt, to become 2009's "Most Dangerous Celebrity in Cyberspace." Her high-profile relationship with Justin Timberlake makes her a target for spammers and hackers. When "Jessica Biel screensavers" was searched, almost half the Web sites were identified as containing malicious downloads with spyware, adware and potential viruses, according to Internet security company McAfee.

Second Place: Beyonce

Beyonce tops the MTV Video Music Award nominee list and came in second on McAfee's annual "Most Dangerous Celebrity in Cyberspace" list for the second year in a row. Inputting "Beyonce ringtones" into a search engine yielded a dangerous Web site linking to a distributor of adware and spyware.

Third Place: Jennifer Aniston

She's one of Hollywood's most talked-about leading ladies, but search for her with caution. More than 40 percent of the Google search results for "Jennifer Aniston screensavers" contained nasty viruses, including one called the "FunLove virus," according to McAfee.

Fourth Place: Tom Brady

The New England Patriots quarterback seems to attract many fans who want a free download of the athlete in action, but they won't be happy about the Trojan virus that may come with it. His wife, supermodel Gisele Bundchen, came in sixth on the list of stars to watch out for when searching the web.

Fifth Place: Jessica Simpson

Jessica Simpson might be as dangerous to search for online as she is famous. According to Internet security company McAfee, searching for "Jessica Simpson videos" can lead unsuspecting surfers to Web sites with potentially damaging downloads.

Sixth Place: Gisele Bundchen

The world's highest-paid supermodel (and wife of the fourth-place celebrity on this list, football star Tom Brady) is a popular target for cyber-criminals. A search for "Gisele Bundchen photos" can direct users to Web sites that raised red flags in McAfee's security tests.

Seventh Place: Miley Cyrus

The teenage star's image may be wholesome and fun, but searching for her online could corrupt your computer. According to McAfee, cyber-criminals are using Web sites related to Miley Cyrus to link to other harmful sites containing spyware.

Eighth Place (Tie): Megan Fox

"Transformers" star Megan Fox came in eighth on the annual "Most Dangerous Celebrities in Cyberspace" list -- but she's not alone. Searching for another sexy actress resulted in an equal number of risky downloads. Can you guess who it is? Here's a hint -- some say that she and Fox look alike.

Eighth Place (Tie): Angelina Jolie

Searching for Angelina Jolie and Megan Fox 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. Both came in eighth on McAfee's third-annual "Most Dangerous Celebrities in Cyberspace" list.

Ninth Place: Ashley Tisdale

The "High School Musical" star is a popular search term when it comes to looking for screensavers. But a host of those screensaver Web sites contained numerous malware-laden downloads.

10th Place: Brad Pitt

Appearing in the top spot last year, Brad Pitt fell towards the bottom of this year's "Most Dangerous Celebrities in Cyberspace" list, resulting in a fewer, but just as dangerous, red and yellow-ranked Web sites, according to Internet security company McAfee.

11th Reese Witherspoon

Risky Web sites were identified when searching for "Reese Witherspoon" and "Reese Witherspoon photos" promoting free files with hidden malware.

12 Place: Britney Spears

McAfee SiteAdvisor technology found a single Web site promoting free Britney Spears wallpaper that was embedded with more than 50 potentially infected downloads.

13th Place: Rihanna

If you're looking for free Rihanna ringtones, search with caution -- some shady vendors mislead those who subscribe by gathering and selling their personal information, according to McAfee.

14th Place: Lindsay Lohan

McAfee SiteAdvisor flagged Lindsay Lohan screen saver sites as offering a combined 50+ free screen savers infected with Trojans, viruses and spyware.

15th Place: Kim Kardashian

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.

Danger: Young Hollywood

Other members of Hollywood's young elite made appearances on this year's list. "Twilight" star Robert Pattinson came in at No. 30, while his co-star Kristen Stewart ranked in at No. 20. Also on the list are the Jonas Brothers (No. 23), Taylor Swift (No. 16), Lauren Conrad (No. 25) and real-life couple Vanessa Hudgens (No. 17) and Zac Efron (No. 21).

Safer Searching: The Obamas

While they certainly generate a lot of attention, the President and first lady are not among the most risky public figures to search. Barack and Michelle Obama ranked in the bottom-third of this year's results, coming in at No. 34 and No. 39, respectively.