In 20 years, viruses have moved from floppy disks to file...
In 20 years, viruses have moved from floppy disks to file viruses, to e-mail viruses, to Internet worms, to targeted Trojan-horse attacks.
In 20 years, viruses have moved from floppy disks to file viruses, to e-mail viruses, to Internet worms, to targeted Trojan-horse attacks.