Question

Why is it necessary to update virus definitions?

Answer 1

The purpose of the antivirus software is to detect and clean any virus from a Computer. The software uses a database of known viruses, called 'virus definitions'. We'll find out in this article why it is important to keep this database updated all the times

Answer 2

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Avast Antivirus uses a database of known virus definitions to identify malware and other threats on your PC, which is why it is important to ensure the virus definitions are regularly updated.