How are trojan horse produced?

Bug are created by people who desire to trigger damage to others, or who wish to acquire control over somebody else's computer system. The most basic method to create a virus is to take some existing code and customize it a little. This brand-new code can then be distributed to others, who may unintentionally run it by themselves computer systems.  read When the virus is running, it can do anything its developer wants it to, consisting of erasing files, stealing information, or sending out spam. More sophisticated infections can be extremely challenging to discover and remove.