Abbreviation of virus?

Usually, the word "virus" itself isn't abbreviated, but you may see a number of abbreviations used in their names. One example is W32 or Win32, commonly used by antivirus companies in naming viruses designed to run on 32-bit Windows, which includes operating systems like Windows XP and Windows 2000. Some antivirus companies use more specific ones; McAfee, for instance, adds "@mm" to the ends of the names of viruses and worms which mail themselves to addresses in a user's Outlook address book, for example (the "mm" stands for "mass mailer"). Many antivirus companies add "-gen" or ".gen" to the names of viruses detected as following the generic format of a virus in a certain group.