As everybody knows antiviruses are kind of programs that prevents to run unwanted software on your computer. I will talk only about bad unwanted software that can harm you one way or another. I will not talk about software that installs unwanted software or run some parts when you don’t want to.

Previously only viruses were kind of unwanted bad software but now there viruses probably small part of it and viruses are usually used just to breach defenses and then they run something else on your computer. It could be crypto currency mining, hackers can use your computer to hack other computers, sending spam and many other bad things that you obviously don’t want.

Someone could say: “I installed