Types Of Computer Viruses: Companion Viruses
Now this on might seem to be a very odd name but companion viruses are also among some of the most notorious computer viruses. These files attach themselves to any other file in an indirect manner. The result is that they accompany the host file anywhere it goes. Primarily these computer viruses are transferred using removable storage. When the host file gets loaded in the RAM and executed, the virus is also triggered and executes its payload. The virus generally uses the hidden file attribute to escape the eyes of users when they have copied one file but two files get copied.