Computer Viruses And Their Effects On Your PC

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Term Paper Title	Computer Viruses And Their Effects On Your PC
# of Words	1229
# of Pages (250 words per page double spaced)	4.92

Computer Viruses and their Effects on your PC

Computer Viruses and their Effects on your PC

Table of Contents

What is a Virus? .............................................1
HOW A VIRUS INFECTS YOUR SYSTEM: .............................2
HOW DOES A VIRUS SPREAD? .....................................3
BIGGEST MYTH: "I BUY ALL OF MY PROGRAMS ON CD ROM FROM THE
     STORE". STORE BOUGHT SOFTWARE NEVER CONTAINS VIRUSES.... 3
INFECTION (DAMAGES) ..........................................4
PROTECT YOUR COMPUTER, NOW!! ................................ 5

     A virus is an independent program that reproduces itself.  It can attach
itself to other programs and  make copies of itself (i.e., companion viruses).
It can damage or corrupt data, or lower the performance of your system by using
resources like memory or disk space.  A virus can be annoying or it can cost you
lots of cold hard cash.  A virus is just another name for a class of programs.
They do anything that another program can.  The only distinguishing
characteristic is the program has ability to reproduce and infect other programs.
Is a computer virus similar to a human virus?  Below is a chart that will show
the similarities.

Comparing Biological Viruses & Human Viruses

Human Virus Effects
Attack specific body cells' Modify the genetic information of a
cell other than previous one. It performs tasks. New viruses grow in the
infected cell itself. An infected program may not exhibit symptoms for a
while. Not all cells with which the virus contact are infected. Viruses can
mutate and thus cannot clearly be diagnosed. Infected cells aren't infected more
than once by the same cell.

Computer Virus Effects

Attack specific programs (*.com,*.exe) Manipulate the program: The infected
program produces virus programs. The infected program can work without error for
a long time. Program can be made immune against certain viruses. Virus program
can modify themselves & possibly escape detection this way. Programs are
infected only once by most viruses.

     There are many ways a virus can infect you system.  One way is, if the
virus is a file infecting virus, when you run a file infected with that virus.
This particular kind of virus can only infect if YOU run the program!  This
virus targets COM and EXE files, but have also been found in other executable
files.  some viruses are memory resident which will infect every file run after
that one.  Other are “direct action” injectors that immediately infect other
fil...

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