What is the most typical type of virus?

In computer security, an infection is a kind of destructive code or program that self-replicates by placing its code into other programs.  https://9tolife.co.uk/?p=1265 As a result, infected computer systems can spread the infection to other computers. Infections are frequently spread by email attachments, social networks links, and online advertisements. The most common type of trojan horse is theTrojan horse, which techniques users into clicking on a harmful link or e-mail attachment. see this here