What is a database of a virus called?

What is virus signature database?

A virus signature (also known as a virus definition) is a file or multiple files that are downloaded by a security program to identify a computer virus.

How do you update a virus database?

Open Windows Defender in your applications list, or go to Settings>Update & security>Windows Defender>Open Windows Defender Security Center. Click on Virus & threat protection.

What is virus dictionary approach?

In the virus dictionary approach, when the anti-virus software examines a file, it refers to a dictionary of known viruses that have been identified by the author of the anti-virus software.

Does every virus have a signature?

New viruses have a virus signature that are not used by other viruses, but new "strains" of known virus sometimes use the same virus signature as earlier strains. Antivirus software performs frequent virus signature, or definition, updates. These updates are necessary for the software to detect and remove new viruses.