This document provides information about computer viruses including their components, how they spread, types of viruses, and prevention and treatment methods. It discusses how viruses replicate and attach themselves to other programs to spread from one computer to another. It also lists common antivirus software that can be installed to help prevent the spread of viruses and recommends regularly updating the software.

1. SORAN UNIVERSITY
Faculty of Science And Engineering
School of Engineering
Department of Chemical Engineering
Names Group Partners : Abdulsamad Abdulhamed , Shkofa Kawa , Rezhin
Muhsin , Zhela Fakher
Name of Presentation : Virus
Instructor Name : Dr.Muhammedamen , Mr.Aras Masod
Date : 11/5/2014

2. The purpose of Presentation :
The purpose of this presentation is to know the details of the virus where the
components and its impact and how it is prevention and treatment of computer
from viruses.

3. Computer viruses are a type of software program that, abiological virus, reproduces
and spreads itself . Some virus may display only a message on the screen, others
may slow down the Pc. They can also erase files or even format your floppy or hard
Disk and crash the system.
INTRODUCTION :

4. Computer virus is characterized as :Computer virus is characterized as :
Computer virus is characterized as :
1) Program is capable of reincarnation Replication and spread.
The virus binds himself another program called custodial host.2)
Can not arise virus from the same.3)
4) Can be transmitted from an infected computer to another uninfected.

5. Components of the virus :
1) Mechanism Reincarnation The Replication Mechanism, the part that allows the
virus to reproduce itself
2) Mechanism stealthy The Protection Mechanism, the part that hides the virus for
discovery.
3) Mechanism of activation The trigger Mechanism, the part that allows the virus to
spread before it knew its such as using the timing of hour in a computer
4) Implementation Mechanism The Payload Mechanism which is implemented by
the virus when it is activated.

6. :Symptoms
1) Letters looks like they are falling to the bottom of the screen.
2) The computer system becomes slow .
3) The size of available free memory reduces .
4) The hard disk runs out of space .
.The computer does not boot5)

7. :How does it spread
1) Computer viruses spread by attaching themselves to other computer program
files.
2) When you exchange a file or pen drive with a virus, the virus spreads from one
Computer to the another.
3) Viruses also spreads when a Computer Engineer comes to repair your system and
diagnostics disks in your PC.his/herputs

8. Types of computer viruses :
1) Boot viruses:- The boot virus copies the virus code in the boot sector.
2) Polymorphic viruses:- They are coded in such a way that they infect a system and
change their signature.
3) Macro viruses:- Macros are blocks of code written to automate frequently
performed tasks and embedded in a program file.
4) Worms:- Worms are program that replicate and spread to other system.
5) Trojans:- A Trojan is a program file that claims to do something but it actually
dose something that is not required.

9. Preservation and cure :
1) Install an Antivirus software.
2) Regularly update the program.
files, or the3) Open email attachment files only if you are expecting the attached
sender is known and has confirmed sending the file.
4) Try to avoid downloading and installing software from the Internet.
5) Install only registered copies of software on the system.

10. Antivirus Software :
1) Norton Anti-Virus.
2) MaCfee.
3) Avast.
4) Quick Heal.
5) Panda.
6) Command Software.
7) Finjan Software.
8) Proland Software.
9) Central Command.
10) Alwil Software.

11. File types that can infect the virus :
1)EXE ,COM.
2)Microsoft word and Microsoft Excel.
3)PDF.
4)RAR, ZIP.
5)Files MP3 .

12. :Languages that writes by virus
is AssembleOf the most important languages ​​in which it writes by the virus code
language For easy access to computer hardware and there are also language high-
end such as visual basic.

13. Conclusion :
be installed and beFor better and safe computation anti-virus software should
helpfull for global network system freely.