Antivirus protects your computer from viruses. There are various antivirus softwares available today. It is important to keep updating your antivirus software.
New viruses are released daily by people who have plenty of time and intelligence to waste. To keep your pc safe from the latest and newly released viruses it is important to update antivirus. Most people just intall an antivurus and stop at it. Most antivirus softwares can be update freely , to stay secure it is recommended that you have automatic updates enabled.
But f you want to manually install updates make sure you install it atleast once a week and then run a virus scan to check if your system has not been infected from the time you last updated.
So update your virus today if you haven’t yet