According to McAfee, 16.50% of Web searches for Superman led to sites with viruses and other malicious software.
Pictured here: The Superman costume that was worn by Christopher Reeve in "Superman: The Movie." on display at Profiles In History in Calabasas, northwest of downtown Los Angeles, Calif., July 19, 2012.
According to McAfee, 16.35% of Web searches for Thor landed on sites with viruses or other malware.
Pictured here: A wax figure of Thor, as portrayed by actor Chris Hemsworth, appears at the Madame Tussauds New York's Interactive Marvel Super Hero Experience at Madame Tussauds on in New York City, April 26, 2012.
#3: (tie) Wonder Woman
McAfee says 15.70% of searches for Wonder Woman led to unsafe Web sites.
Pictured here: Olympic Vollyball Gold Medal winner Misty May made her acting debut as Wonder Woman during taping of the "Eve" television show in Los Angeles, Calif., Sept. 9, 2004.
#3: (tie) Aquaman
Aquaman, last year's #1, tied for third place this year with 15.70% of searches leading to malicious sites.
Pictured: The cover of the DC Comics' zero issue of "Aquaman."
McAfee says 15.10% of Wolverine sites tested positive for malware.
Pictured here: Madame Tussauds New York celebrates their 'Marvel Month of May' by unveiling a wax figure of 'Wolverine', as portrayed by actor Hugh Jackman, flexing his muscles with claws drawn, sweating it out along side New York Sports Club members in New York City, May 14, 2013.
14.70% of searches for Spiderman led to Web sites containing malware, according to McAfee.
Pictured here: Spiderman attends "The Amazing Spider-Man 2" Be Amazing Day Volunteer Day at I.S. 145 Joseph Pulitzer in Queens, New York, April 25, 2014.
Web searches for Batman led to unsafe sites in 14.20% of cases, McAfee reports.
Pictured here: A visitor looks at Batman masks used in the seven Batman films at The Batman Exhibit on the exhibitions opening day at the Warner Bros. Studio lot in Burbank, California, June 26, 2014.
#7: Black Widow
Black Widow is one of two female characters on McAfee's list this year. Web searches led to malicious sites 13.85% of the time.
Pictured here: A visitor to the London Super Comic Convention wears a Black Widow costume at ExCel in London, England, Feb. 25, 2012.
#8: Captain America
Web searches for Captain America led to malware 13.50% of the time, McAfee reports.
Pictured here: A Captain America character is on display at Universal Studios during the Spider-Man 40th Birthday celebration in Universal City, Calif., Aug. 13, 2002.
#9: Green Lantern
McAfee says 11.25% of searches for Green Lantern led to sites that tested positive for viruses or other online threats.
Pictured here: The emblem of the superhero Green Lantern stands outside the premier of Warner Bros. Pictures' "Green Lantern" held at Grauman’s Chinese Theatre in Hollywood, Calif., June 15, 2011.
#10: Ghost Rider
Searching for Ghost Rider online led to unsafe Web sites 10.83% of the time, according to McAfee.
This file image provided by Columbia Pictures shows Nicholas Cage in a scene from "Ghost Rider: Spirit of Vengeance."