A computer virus can be created maliciously by anyone who wishes to harm computers or systems. They are hidden bits of code that attach themselves to different programs or applications and when activated, spread like wildfire. Typically, viruses can be discovered attached to a file or program that has been downloaded from the internet or shared via email. The majority of countries think that creating and spreading computer viruses is illegal.
There are a myriad of types of computer viruses which can infect machines in different ways. Some computer viruses are dependent on an application to begin their work. Others are autonomous and can attack several systems without the need for a host. A computer virus that relies on host programs to infect computers is typically considered to be a worm however, those that do not make use of the method used to infect through other programs are deemed to be viruses.
Certain viruses can infect a system immediately upon entry, whereas others are inactive and only activate when the user executes the code. The first computer virus was developed in 1974, and it behaved similar to a biological virus by rapidly multiplying itself and damaging the system. One example of a destructive virus is the Stuxnet virus, which was specifically designed to destroy computerized centrifuges utilized to enrich the uranium.
The process of making viruses can be complicated and is not for the faint of heart. However, it can be a great and interesting way to test your skills in computer programming languages and systems. If you’re willing to put in the effort and time there are a lot of sources available to teach you how to create viruses.