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1200 West University Ave
Mitchell, SD 57301
Phone:
605-995-2697
E-mail: helpdesk@dwu.edu
Web: http://www.dwu.edu/is//
Spyware
Common Files of File Sharing &
Adware/Spyware
What is spyware?
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Spyware is any software that covertly gathers user information through the
user's Internet connection without their knowledge. It is generally used for
advertising. It is often included within freeware or shareware programs that
are downloaded off the Internet.
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Spyware can invade your privacy. It can monitor keystrokes, scan harddrives,
read cookies, install other software, load advertisement, and constantly
relay information back, and forth to the author of the spyware. It can
gather information about email addresses, the users' activities on the
Internet, and even password and credit card numbers. This information then
can be passed along undetected to someone else.
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Spyware robs the user of
memory resources on their computer. It can make your computer system and
browser unstable and cause your system or browser to crash. It can also make
your system run slower.
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The bad news is there are
hundreds of these types of programs out there. Some common spyware programs
include: Hotbar, Comet Cursor, Xupiter, Gator, Offer Companion and
BonziBuddy. RealAudio Player can also put "data mining" software on your
system to "track preferences" and report back to the mothership. Even free
CD games from a cereal box or fast food kid's meal can put "adware" on your
system.
Symptoms
- browser crashes
- computer instability
- high CPU utilization
- unexplained freezing
- slowness
- slow boot time
- "blue screen of death"
- illegal operation errors
- signature lines change
- pop-up/under advertisements appear when
the user is online and offline
- default homepage of the browser changes
Spyware categories
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Adware networks
The backbone for big time spyware are ad serving networks that pay
publishers of games, utilities and music/video players per download, to
include their ad serving programs. As serving networks are DoublClick,
Web3000, Radiate, SaveNow, GAIN.
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Stalking horses
A number of programs that enable the adware networks to function on
desktops are bundled in many popular programs and often (not always)
presented in installation disclosure screens as desirable add-ons to their
Trojan horse hosts. All collect information. Included in TopText, Cydoor,
OnFlow, Medialoads, Delfin, WebHancer, New.net
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Trojan horses
These popular Internet downloads usually come with ad serving network
basic software and at least one stalking horse. Included in KaZaa, Grokster,
Morpheus, Limewire, AudioGalaxy, iMesh, DivX.
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Backdoor Santas
Stand-alone programs that incorporate similar approaches have no links
to ad serving networks and collect information from users. Included in Alexa,
Hotbar, Comet Cusor, eWallet, CuteFTP, BonziBuddy.
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Cookies
Netscape Navigator and Internet Explorer will still send out existing
cookies even after disabling cookies in the browser settings. You must
manually delete any/all cookie files on your system to eliminate being
tracked by third party ad networks or spyware or adware providers.
How do you get rid of Spyware?
Many anti-Spyware products are available
for free download, such as Ad-aware and Spybot. These products scan for
Spyware and allow you to remove it.
In Ad-aware, the Scan now option will
search default or selected drives for Spyware files. When the scan is
finished, click Next to view display results for the objects found.
Double-click on any object to view its details and decide whether you want
it to stay on your computer. To remove objects, click their checkbox and
then click Next.
In Spybot, the Search for Problems option
will perform a system scan for Spyware. When the scan is finished, results
will appear in the white box. Click the fix selected problems button to
delete the checked files. Spybot also has an Immunize option to block
problem files.
How do you keep from getting Spyware?
- Always install from trusted sources and
make sure to read the End User License Agreement.
- Set your browser not to allow
third-party or session cookies. For Internet Explorer (5 and above), this
is done in Tools-->Internet Options-->Privacy.
- Delete temporary Internet files and set
History to 1 day. For Internet Explorer (4 and above), this is done in
Tools-->Internet options-->General.
- Use anti-virus software and keep it
up-to-date.
- Use a personal firewall such as Zone
Alarm and/or an Internet filter such as DNSKong.
- Avoid using Peer-2-Peer file sharing
programs or “freeware.”
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Do not click on banners that
appear at the top of web pages even if they look like a fun game, they say
you are a winner or they are going to help you correct a potential problem
on your computer (your clock is wrong, you have spyware, ect.). Do not
download free software. If you must use free software, be as selective as
possible and only install that which is completely necessary. Use
trustworthy web sites.
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Do not follow links in spam e-mail
messages. They often take you to sites that install spyware on your
computer.
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Music/file sharing software is
illegal. It is also a pipeline to spyware, viruses and hackers.
Are cookies considered
spyware?
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Cookies are used in a manner
similar to adware and spyware. They report information about you back to the
publisher of the cookie. Many, many web sites use cookies. Respectable
sites, such as Amazon.com, use cookies responsibly. They only store
information directly related to the use of their web pages. Other sites
gather more information than they should. Cookies can easily be deleted and
they can recreated when you revisit the site.
How to detect and remove
spyware
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There is no one software
product that will detect and remove all spyware. Until better anti-spyware
software is developed the best you can hope for is to manage the problem.
Try using free products and use them in tadem. Neither product is known to
install spyware or adware. They are Adware and Spybot.
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Removing spyware may disable
the software it tagged along with. In some cases the spyware cannot be
removed until the free software it came with is also removed.
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