The term comes from a story in Homer's Iliad, in which the
Greeks give a giant wooden horse to their foes, the Trojans,
ostensibly as a peace offering. But after the Trojans drag the
horse inside their city walls, Greek soldiers sneak out of the
horse's hollow belly and open the city gates, allowing their
compatriots to pour in and capture Troy.
Update A new version of a software or hardware product designed to
replace an older version of the same product. In addition, the
installation routines for updates often check to make sure that
an older version is already installed on your computer; if not,
you cannot install the update.
BitDefender has it's own update module that allows you to
manually check for updates, or let it automatically update the
product.
Virus A program or piece of code that is loaded onto your computer
without your knowledge and runs against your will. Most vir-
uses can also replicate themselves. All computer viruses are
manmade. A simple virus that can copy itself over and over
again is relatively easy to produce. Even such a simple virus
is dangerous because it will quickly use all available memory
and bring the system to a halt. An even more dangerous type
of virus is one capable of transmitting itself across networks
and bypassing security systems.
Virus definition The binary pattern of a virus, used by the antivirus program to
detect and eliminate the virus.
Worm A program that propagates itself over a network, reproducing
itself as it goes. It cannot attach itself to other programs.
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