System information

22 Kaspersky Internet Security 2009
TYPE
NAME
DESCRIPTION
Trojans
Trojans
Trojans include the following malicious
programs:
 Classic Trojan programs, which only
perform the major functions of Trojan
programs: blocking, modifying or
erasing data, disrupting the operation
of computers or computer networks.
They do not have the additional
functions characteristic of other types
of Trojan programs described in this
table;
 “multi-purpose” Trojan programs,
which do have additional functions
characteristic of several types of Trojan
programs.
Trojan-
Ransoms
Trojan programs
requiring a
ransom
They "take hostage" information on the
user's computer, modifying or blocking it
or disrupt the operation of the computer
so that the user cannot use the data. Then
the intruder demands a ransom from the
user, in exchange for a promise to send
the program that will restore the
computer's operability.
Trojan-
Clickers
Trojan-Clickers
These programs access web pages from
the user's computer: they send a
command to the web browser, or replace
web addresses stored in the system files.
Using these programs the intruders
arrange network attacks, or increase the
traffic to particular sites to boost revenues
from displaying ad banners.