Why Do I Feel Like Somebody’s Watching Me?
Spyware is one of the fastest-growing internet
threats. According to the National
Cyber Security Alliance, spyware infects more than 90% of all PCs today. These unobtrusive, malicious programs are
designed to silently bypass firewalls and anti-virus software without the
user’s knowledge. Once embedded in a computer,
it can wreak havoc on the system’s performance while gathering your personal
information. Fortunately, unlike
viruses and worms, spyware programs do not usually self-replicate.
Where
does it come from?
Typically, spyware originates in three ways. The first and most common way is when the user
installs it. In this scenario, spyware
is embedded, attached, or bundled with a freeware or shareware program without
the user’s knowledge. The user
downloads the program to their computer.
Once downloaded, the spyware program goes to work collecting data for the
spyware author’s personal use or to sell to a third-party. Beware of many P2P file-sharing programs. They are notorious for downloads that posses
spyware programs.
The user of a downloadable program should pay extra
attention to the accompanying licensing agreement. Often the software publisher will warn the user that a spyware
program will be installed along with the requested program. Unfortunately, we do not always take the
time to read the fine print. Some
agreements may provide special “opt-out” boxes that the user can click to stop
the spyware from being included in the download. Be sure to review the document before signing off on the
download.
Another way that spyware can access your computer is
by tricking you into manipulating the security features designed to prevent any
unwanted installations. The Internet
Explorer Web browser was designed not to allow websites to start any unwanted
downloads. That is why the user has to
initiate a download by clicking on a link.
These links can prove deceptive.
For example, a pop-up modeled after a standard Windows dialog box, may
appear on your screen. The message may ask
you if you would like to optimize your internet access. It provides yes or no answer buttons, but,
no matter which button you push, a download containing the spyware program will
commence. Newer versions of Internet Explorer are now making this spyware pathway
a little more difficult.
Finally, some spyware applications infect a system
by attacking security holes in the Web browser or other software. When the user navigates a webpage controlled
by a spyware author, the page contains code designed to attack the browser, and
force the installation of the spyware program.
What
can spyware programs do?
Spyware
programs can accomplish a multitude of malicious tasks. Some of their deeds are simply annoying for
the user; others can become downright aggressive in nature.
Spyware can:
1.
Monitor your keystrokes for reporting purposes.
2.
Scan files located on your hard drive.
3.
Snoop through applications on our desktop.
4.
Install other spyware programs into your computer.
5.
Read your cookies.
6.
Steal credit card numbers, passwords, and other personal information.
7.
Change the default settings on your home page web browser.
8.
Mutate into a second generation of spyware thus making it more difficult
to eradicate.
9.
Cause your computer to run slower.
10.
Deliver annoying pop up advertisements.
11.
Add advertising links to web pages for which the author does not get
paid. Instead, payment is directed to
the spyware programmer that changed the original affiliate’s settings.
12.
Provide the user with no uninstall option and places itself in unexpected
or hidden places within your computer making it difficult to remove.
Spyware
Examples
Here are a few examples of
commonly seen spyware programs. Please
note that while researchers will often give names to spyware programs, they may
not match the names the spyware-writers use.
CoolWebSearch, a group of programs, that install through “holes”
found in Internet Explorer. These programs direct traffic to advertisements on
Web sites including coolwebsearch.com. This spyware nuisance displays
pop-up ads, rewrites search engine results, and alters the computer
host file to direct the Domain Name System (DNS) to lookup preselected
sites.
Internet Optimizer
(a/k/a
DyFuCa), likes to redirect
Internet Explorer error pages to advertisements. When the user follows the
broken link or enters an erroneous URL, a page of advertisements pop up.
180 Solutions reports extensive information to advertisers about
the Web sites which you visit. It also
alters HTTP requests for affiliate
advertisements linked from a Web site.
Therefore the 180 Solutions Company makes an unearned profit off of the
click through advertisements they’ve altered.
HuntBar (a/k/a WinTools)
or Adware.Websearch, is distributed by Traffic Syndicate
and is installed by ActiveX drive-by downloading at affiliate websites or by
advertisements displayed by other spyware programs. It’s a prime example of how spyware can install more
spyware. These programs will add toolbars to Internet Explorer, track Web
browsing behavior, and display advertisements.
How can I prevent spyware?
There are a couple things you
can do to prevent spyware from infecting your computer system. First, invest in a reliable commercial
anti-spyware program. There are several
currently on the market including stand alone software packages such as
Lavasoft’s Ad-Aware or Windows Antispyware.
Other options provide the anti-spyware software as part of an anti-virus
package. This type of option is offered
by companies such as Sophos, Symantec, and McAfee. Anti-spyware programs can
combat spyware by providing real-time protection, scanning, and removal of any
found spyware software. As with most programs, update your anti virus
software frequently.
As discussed, the Internet Explorer (IE) is often a contributor to the
spyware problem because spyware programs like to attach themselves to its
functionality. Spyware enjoys
penetrating the IE’s weaknesses.
Because of this, many users have switched to non-IE browsers. However, if you prefer to stick with
Internet Explorer, be sure to update the security patches regularly, and only
download programs from reputable sources.
This will help reduce your chances of a spyware infiltration.
And, when all else fails?
Finally, if your computer has
been infected with a large number of spyware programs, the only solution you
may have is backing up your data, and performing a complete reinstall of the
operating system.
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