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Norton AntiVirus provides a variety of threat protection
and quick access features that help you maintain the
security of your computer.
Virus and threat protection features
Norton AntiVirus monitors your computer for known and
unknown viruses. A known virus is one that Norton
AntiVirus can detect and identify by name. An unknown
virus is one for which Norton AntiVirus does not yet have
a definition.
Norton AntiVirus protects your computer from both
types of viruses, using virus definitions to detect known
viruses, and Bloodhound technology to detect unknown
viruses. Norton AntiVirus uses virus definitions and
Bloodhound technology during scheduled scans and
manual scans, and Auto-Protect uses them to monitor
your computer constantly.