#8 Jon Hamm
Browsing for pictures and information on "Mad Men" star Jon Hamm -- seen here attending the 2012 Democratic National Convention -- gives you with a 10 percent chance finding yourself on a Web site that McAfee said tested positive for spam, adware, spyware, viruses, or other malware.
September 18, 2013 12:31 PM PDT
Photo by: Photo by Chip Somodevilla/Getty Images
| Caption by: James Martin
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