The creation of a new signature should be performed when a new virus is discovered that cannot be detected or removed correctly by the existing virus signature. In order to create the new signature, the antivirus vendor must spend time creating and testing it. In the form of a signature update, they push out the signature once it is available. In addition to adding detection capability to your scan engine, you should use this update. 

Also Read Complete Blog :- what is virus signature? 

This software helps you to prevent viruses and malicious code from entering your computer in real time. To improve overall detection, a previously rendered signature may be replaced or removed in some cases. Updates will be offered every day, every week, or every hour, according to the scanning vendor. In order to maintain the highest level of protection, you should regularly update your antivirus software. Patches will be released by the vendor depending on the antivirus you use. A maximum level of protection can be achieved by downloading and installing the software.