INT 60 - VIRUS - "Zero Bug" - INSTALLATION CHECK Desc: The "Zero Bug" virusA program which attaches itself to other programs for the purpose of duplicating itself. Viruses often (but not always) contain harmful code which is triggered by some event, after a certain number of reproductions, or on a specific date. See also worm. hooks this vector. It considers itself installed if offset 103h of the handler's segment contains the bytes "ZE" SeeAlso: INT 32"VIRUS",INT 44"VIRUS",INT 61"SEMTEX"