I think that winzip.com was hacked. Now button “Try it for free Win 10/8/7/Vista” from winzip.com links to http://www.winzipsoftware.com/1ycak9cJzsDvQGQfRljmYKl8Xb+JKsVAaCU7wh7KttIaORSF3+qPBDLgfUY5gHVaR0aF21LIApB+xNMGsJ1EQFof3zg0hLBts38GWzqAFi8y3fy8MFD0SxGe5a63CsTK8Bu241QpYjFtI11sQ5TRJ8wxkpQ2QvwM32Z+R_ry_E8yKauFPbpGSPAT8LECbImfnOy71eJ8vzInOeBX5zenrX6vY5GToMwKQDqo4N1W0IJKOTucUD1nXImg_JscPiUnPOW8p+XCbRnoIoCrHzHXGazSyqIfuo3VT5EuLRRXUXZAF57_25a0JqZQb_VJJOSbcvzHYpts1NpfPtOgfkYYoac35ExzjnqMgVLhAnLzDJ44mdwV92q7JEW3ZqY8DYPvAZPvW4XV7wg+HPeqRegGlgU9YONC0w==-GzMAAERveF6I85dEy0dgAw6cSuAF12Fj7ByHIES8saLlTXxO0kULqiG4pjSK+Dk=
And the link changes every time you enter the winzip.com site.