Suppose that one day you get an e-mail from one of your friends suggesting you download and install a new game she found online. you download, install, and play the game. without your knowledge, the game forwards a recommendation to download and install the game to all of your e-mail contacts. without any outward sign, each instance of the game is part of a malicious attempt to flood a government website so that it crashes. what type of virus is on your computer?

a companion virus

a polymorphic virus

a boot sector virus

a sharing virus