4 OCT. 2019 · Antivirus software is the "policeman" at the gate of a computer system. It protects the computer from incoming threats and seeks out, destroys and warns of possible threats to the system. New viruses are coming out all the time. It is the job of the antivirus software to keep up with the latest threats. https://antivirus.comodo.com/faq/antivirus/what-is-difference-between-virus-and-antivirus/