Why Updating of Antivirus is Important?
As I mention above, every minute there are lots of new virus types that come online to attack on our computers. So, Antivirus programs update their virus registry on a daily basis. These updates are important because new viruses are released every day, and they can go undetected if the virus scanner is not up to date. Virus signature / Database/Data mask is an algorithm or a set of algorithms which calculate a hash to distinctively identify the strains of a virus. A generic anti-virus checks the database or virus signature and a heuristic anti-virus uses heuristic algorithm and checks malicious character in virus behavior by different statistical and other advanced means.
