#6 Katy Perry
Katy Perry -- seen here performing on the opening night of her "California Dreams" UK tour in London -- has a 10.4 percent chance of leading you to a Web page that McAfee said tested positive for spam, adware, spyware, viruses, or other malware.
September 18, 2013 12:31 PM PDT
Photo by: Photo by Neil Lupin/Getty Images
| Caption by: James Martin
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