THREATS
to your PC...Expanded
Threats
Expanded
threats exist outside of
commonly known definitions of
viruses, worms, and Trojan
horses that may provide
unauthorized access, threats to
system or data security, and
other types of threats or
nuisances. Expanded threats may
be unknowingly downloaded from
Web sites, email messages, or
instant messengers. They can
also be installed as a
by-product of accepting the End
User License Agreement from
another software program related
to or linked in some way to the
expanded threat.
Adware:
Programs that secretly gather
personal information through the
Internet and relay it back to
another computer, generally for
advertising purposes. This is
often accomplished by tracking
information related to Internet
browser usage or habits.
Adware
can be downloaded from Web sites
(typically in shareware or
freeware), email messages, and
instant messengers. A user may
unknowingly trigger adware by
accepting an End User License
Agreement from a software
program linked to the adware.
Dialers:
Programs that use a system,
without your permission or
knowledge, to dial out through
the Internet to a 900 number or
FTP site, typically to accrue
charges.
Hack
Tools:
Tools used by a hacker to gain
unauthorized access to your
computer. One example of a hack
tool is a keystroke logger -- a
program that tracks and records
individual keystrokes and can
send this information back to
the hacker.
Joke
Programs:
Programs that change or
interrupt the normal behavior of
your computer, creating a
general distraction or nuisance.
Remote
Access:
Programs that allow another
computer to gain information or
to attack or alter your
computer, usually over the
Internet. Remote access programs
detected in virus scans may be
recognizable commercial
software, which are brought to
the user’s attention during
the scan.
Security
Risks:
Threats which do not conform to
the strict definitions of
Viruses, Trojan horses, Worms,
or other expanded threat
categories, but which may
present a threat to your
computer and its data.
Spyware:
Stand-alone programs that can
secretly monitor system
activity. These may detect
passwords or other confidential
information and transmit them to
another computer.
Spyware
can be downloaded from Web sites
(typically in shareware or
freeware), email messages, and
instant messengers. A user may
unknowingly trigger spyware by
accepting an End User License
Agreement from a software
program linked to the spyware.
Viruses,
Worms and Trojan Horses:
A virus is a program or code
that replicates; that is,
infects another program, boot
sector, partition sector, or
document that supports macros,
by inserting itself or attaching
itself to that medium. Most
viruses only replicate, though,
many do a large amount of damage
as well.
A
worm is a program that makes
copies of itself; for example,
from one disk drive to another,
or by copying itself using email
or another transport mechanism.
The worm may do damage and
compromise the security of the
computer. It may arrive in the
form of a joke program or
software of some sort.
A
Trojan Horse is a program that
neither replicates nor copies
itself, but causes damage or
compromises the security of the
computer. Typically, an
individual emails a Trojan Horse
to you-it does not email
itself-and it may arrive in the
form of a joke program or
software of some sort.
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