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P2P Dangers |
Dear Netlink
Customer, |
P2P
Dangers
- File Sharing Can Compromise Your Computer's Security
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Peer-to-peer file-sharing
programs appear to be a godsend: they allow you to swap digital files with others
who have the same file-sharing software. Thousands of people use peer-to-peer
(often called P2P) programs to exchange music, videos, movies, games, and software.
But P2P programs are seemingly synonymous with trouble.
First, there are the well-publicized copyright infringement issues that arose
when Napster, the first widely used P2P program for exchanging music files, became
wildly popular in the late 1990s. Other examples of P2P programs are Kazaa, Morpheus,
eDonkey, and Gnutella.
Less well-known, but perhaps more significant, is how using P2P programs can expose
your computer to viruses, worms, Trojan horses, adware, and spyware, and even
expose you to identity theft and fraud. How can these things happen? A P2P network
allows users with the same file-sharing program to access files stored on each
other's computers without the typical network interaction with file servers. This
makes file sharing quick and easy, but these are unsecured Internet connections
unprotected by firewalls, making them prime targets for hackers and virus writers.
It's easy for virus writers to attach malicious code to an innocently titled file
that resides on a file-sharing network. In fact, the infamous MyDoom virus that
wreaked havoc on e-mail systems worldwide in 2004 was initially spread in this
way by unknowing users of the Kazaa file-sharing program.
The same goes for adware and spyware. These unwanted programs could be attached
to an otherwise useful file downloaded from a file-sharing network, exposing you
to a flood of unwanted spam, ad pop-up windows, and web browser hijackings.
Even worse, a skilled hacker can gain access to your entire hard drive through
a file-sharing network, exposing you to identity theft and fraud. A hacker can
do this by using access to the files you intend to share on the file-sharing network
to gain access to personal files not intended for public use. If you have information
such as Social Security numbers and credit card information on your computer,
the potential for identity theft and fraud is very real.
Here's how to protect yourself on P2P networks:
Ask The Help Desk - Why
Is My Computer Screen Wallpaper Distorted?
Question: Sometimes
I save images off the Internet for wallpaper on my computer screen. However,
the images I save quite often look very distorted when I stretch them to full
screen. How can I avoid this?
Answer: You are probably running into a couple of problems. The first
is that of proportions. If the image you are grabbing from the Web isn't proportional
to your screen, it will look distorted when it's stretched. Remember, your screen
format is rectangular having horizontal and vertical dimensions. So if you save
an image that is much more vertical than horizontal, the image will look "fat"
once it is fitted to your screen.
The other problem is that most images found on the Web are not a high enough
resolution to be used for wallpaper. Many computers, for example, are set to
a resolution of either 800x600 pixels or 1024x768 pixels. When grabbing an image
off the Web, the image needs to be close to the same size as the resolution
found on your screen in order to appear undistorted. If the image is only 250x100
pixels, for example, there just won't be enough pixels to fill your computer
screen in an undistorted manner, unless of course you are using a very small
screen.
Note that most site owners have copyright restrictions regarding their site's
content (text and images) so you must first get permission before grabbing an
image to use as computer screen wallpaper.
Great Sites To Check Out This Month
Head To A Drive-In
Movie Theater This Summer
http://DriveInTheater.com - Do you
remember the fun times you had going to the drive-in movie theater on weekends
with your family or friends? There were over 5,000 drive-in movie theaters located
across the U.S. and Canada back in 1958. Today there are less than 600 left
in North America but they are still great fun. Check out the site's database
listing of drive-in theaters and then treat your family to a night of old-fashioned
fun while vacationing this summer. The kids will love the experience and so
will you.
Visit A Lawnmower Museum
http://lawnmowerworld.co.uk/ - Those
of you who are really into lawnmowers have probably already got this site bookmarked.
For everyone else, this is the link to the British Lawnmower Museum. Yes, an
actual museum dedicated to nothing but lawnmowers. Check out the "Gallery" section
for interesting pictures of antique cutting contraptions. It'll make you appreciate
the improvements that have been made in lawn mowing technology since the early
twentieth century.
Calculating Your Social Security Benefits
http://www.SocialSecurity.gov -
There's been much debate regarding the long-term solvency of our Social Security
System. Most agree that the funds will be depleted at some point in the future
because of the changing ratio in the number of people working versus the number
of people retiring. If you have not yet retired, have you ever figured out what
you can expect in monthly social security income based on the current system?
SocialSecurity.gov can calculate this for you. Simply go to the "Calculate your
benefits" link and enter the requested information.
Sign The Declaration of Independence
http://archives.gov/national_archives_experience/charters/declaration.html -
The U.S. National Archives & Records Administration restores and archives important
government documents from our nation's history. Celebrating the anniversary
of our declaration of independence during the month of July provides a great
opportunity to see and learn more about our historical treasures. Go to the
Declaration of Independence area of this site and click on the "Join the Signers
of the Declaration" link. There you can add your name to the ranks of the 56
original signers who stood for freedom and then print off your copy to show
friends and family.
The Cut - The Next Hit Reality TV Show
http://cbs.com/primetime/the_cut/ -
The new CBS TV show The Cut appears to be the next hit reality TV series.
During each weekly episode, clothing designer Tommy Hilfiger pits fashion-savvy
contestants against one another in real fashion world challenges to find the
next great trend setting designer. One contestant is eliminated each week. For
more information about the contestants, each episode, and some behind-the-scenes
drama, head to this site.
Short Tutorial - Images
Saved On Your Computer Screen As Repeated "Tiles"
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As the FAQ in the
"Ask The Help Desk" section above explains, it can be difficult to grab images
off the Web to use as wallpaper without the images appearing distorted on your
computer screen. Rather than trying to stretch pictures to fit your computer's
screen, an alternative is to "tile" your selected image. This process saves
the picture repeatedly in rows on your screen as a background. The result may
be cluttered but probably preferable to the distorted alternative.
To tile an image as your screen's wallpaper when using a PC and Internet
Explorer as your browser, simply right-click on the chosen picture and select
"Set As Background."
If you are on a PC and using the new Firefox browser, right-click on
the image and choose "Set As Wallpaper." When the "Set Wallpaper" dialog box
appears, look for the "Position" menu. It will list "Stretch," "Tile," or "Center"
as options. Choose "Tile" from the list. Click on the "Set Wallpaper" button.
The background of your computer screen will change to multiple rows of the picture
you selected.
If you get tired of using this image, right-click on your PC's desktop
and choose "Properties." With the "Desktop" tab selected, choose the wallpaper
you want from the list that appears. Click "Apply" and then click "OK." (This
works whether using Internet Explorer or Firefox as your browser.)
If you are using a Macintosh running OS X, right-click your cursor arrow
on the image (if you have a two button mouse) or click on the image while holding
down the "ctrl" key (if you have a single button mouse) and select "Download
Image To Disk." Next, go to the Apple menu then drop down to and select "System
Preferences..." Click on the Desktop & Screensaver icon and click on "Choose
Folder" in the left hand pane of the window. Click on "Desktop." The picture
you downloaded to disk should be there. Click on it to select it and then click
on "Choose." Next to the preview picture you'll see a button that says "Fill
Screen." Click on it and four choices will appear: "Fill Screen," "Stretch to
fill screen," "Center," and "Tile." Choose "Tile" and then close the window.
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Thanks for your business!
Best regards,
Mike Huggenberger
Director
Great Plains Communications Netlink
Great Plains Communications Netlink
1600 Great Plains Centre
Blair, NE 68008
1-800-734-7467
©2005 Cornerstone Publishing Group Inc.
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