. "payload" . "Computer viruses" . "Viruses" . "machines" . "system viruses" . . "polymorphic code" . . "stealth capabilities" . "computer virus" . . . "computer virus#Stealth" . . "Computer Viruses" . "Computer_virus#Detection" . "Computer virus#Self-modification" . . "virus-infected" . . "Computer virus" . "email viruses" . "viruses" . "virus" . . . "Computer virus" . . "Computer virus#Viruses and the Internet" . . . "first fictional representations" . "Virus" . . . . . "viral" . . "computer virus#Effects" . "virus definition file" . . "microcomputer viruses" . . "Computer virus#History" . "Computer_virus" . . . "Antivirus" . . . . "bugs" . . . . . . "Computer virus#Stealth strategies" . "Computer virology" . . . . "computer viruses" . "Computer_virus#Self-modification" . . . . . . "computer virus writers" . . . . "anti-virus protection" . "spread like an infection among the androids" . "stealth techniques" . . . "Computer virus#Boot sector viruses" . . .