What is the most common kind of computer system virus?

In computer security, an infection is a kind of malicious code or program that self-replicates by inserting its code into other programs. As a result, contaminated computer systems can spread the infection to other computer systems.  https://freecex.com/?p=1780 Infections are typically spread by email attachments, social networks links, and online advertisements. The most typical type of trojan horse is theTrojan horse, which techniques users into clicking a malicious link or email attachment.