How are computer viruses created?

Bug are created by individuals who desire to cause harm to others, or who desire to get control over somebody else's computer. The simplest method to develop an infection is to take some existing code and modify it somewhat. This new code can then be dispersed to others, who may unintentionally run it on their own computer systems.  you could try this out As soon as the virus is running, it can do anything its creator desires it to, including erasing files, stealing data, or sending spam. More sophisticated viruses can be really hard to spot and remove. linked here