Definition of Virus/bug A bug may be a malware program that, once dead, replicates by inserting copies of itself (possibly modified) into different pc programs, data files, or the boot sector of the laborious drive; once this replication succeeds, the affected square measureas are then aforementioned to be "infected". Computer viruses square measure passed from machine to machine via physical media, e-mail, or different varieties of pc knowledge transmission. once these viruses infect a machine, they will now scan the native machine for e-mail applications, or maybe send themselves to each user within the e-mail address book. Method : 1- Go to your system's desktop and right click on the desktop 2- select a New in the drop down list and then again a new list will be appear 3- select shortcut i n these menu a shortcut window will be appear , 4- write the following code in the box: "Shutdown –s –t 30 –c “write a...