Polymorphic viruses create varied (though fully functional) copies of themselves as a way to avoid detection by anti-virus software. Some polymorphic virus use different encryption schemes and require different decryption routines. Thus, the same virus may look completely different on different systems or even within different files. Other polymorp...
Found on
http://home.mcafee.com/virusinfo/glossary?ctst=1#
A virus which changes itself (mutates) as it passes through host files, making disinfection a serious challenge.
Found on
http://www.encyclo.co.uk/local/20577
No exact match found.
