How are virus created?

Trojan horse are produced by people who wish to trigger harm to others, or who desire to acquire control over someone else's computer system. The easiest method to create a virus is to take some existing code and customize it a little. This new code can then be dispersed to others, who might unintentionally run it on their own computers. As soon as the infection is running, it can do anything its creator wants it to, consisting of deleting files, stealing data, or sending spam. More sophisticated infections can be very difficult to discover and remove. https://cleardex.io/blog/?p=2165