Final answer:
Antivirus software like Norton and McAfee receive updates of new viruses from the internet to stay current with the latest threats.
Step-by-step explanation:
Norton AntiVirus and McAfee VirusScan receive updates of new viruses from the internet. These updates are essential to keep the antivirus software up-to-date and capable of detecting the latest threats. Internet connectivity allows the antivirus software to connect to the servers of Norton and McAfee, where new virus definitions are regularly released. When a user updates their antivirus software, it downloads the latest virus definitions that enable it to recognize and protect against the newest viruses.