UNIVERSITY OF SORAN
Faculty of science & engineering
School of engineering
DPT of petroleum engineering
VIRUS
Prepared by:...
Contents?
what's a computer virus ?
Types of Viruses
Categories of Viruses
How do viruses work?
How an Antivirus work...
What is a virus?
A computer virus is a computer program that
can copy itself and infect a computer without
permission or ...
Types of virus
Boot sector Virus
Master Boot Record virus (MBR)
File infector virus
 Multipartite virus
 Macro Virus
...
Boot sector Virus
 A boot sector virus infects boot sector of
computers. During system boot, boot
sector virus is loaded ...
Master Boot Record virus (MBR)
MBR viruses are memory-resident viruses
that infect disks in the same manner as
boot secto...
File infector virus
File infector viruses infect program files.
Normally infect executable code, such as
.COM, .SYS, .BA...
Multipartite virus
A multipartite virus is a virus that can infect either
boot sectors or executables.
When it infects a...
Macro Virus
Macro viruses infect files that are created using
certain applications or programs that contain
macros.
They...
Trojan Horse
A Trojan horse is a computer program that is
hiding a virus or other potentially damaging
program.
Trojan h...
Worms
A computer worm is a self-replicating computer
program. It uses a network to send copies of
itself to other and it ...
How do viruses work?
Replicating itself
Interrupting system/network use
Modifying configuration settings
Flashing BIOS...
How an Antivirus works?
The antivirus software examines each and every
file in a computer and examines its content with
t...
Thanks for your attention
Upcoming SlideShare
Loading in …5
×

Virus soran university

1,298 views

Published on

that my presentation about virus and types of virus at soran university school of engineering enjoy :)

Published in: Software, Technology
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,298
On SlideShare
0
From Embeds
0
Number of Embeds
11
Actions
Shares
0
Downloads
20
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Virus soran university

  1. 1. UNIVERSITY OF SORAN Faculty of science & engineering School of engineering DPT of petroleum engineering VIRUS Prepared by: Harem Abdullstar Rebaz Abdullqadr Omer Muhammed Supervisor : Mr. Aras Masoud
  2. 2. Contents? what's a computer virus ? Types of Viruses Categories of Viruses How do viruses work? How an Antivirus works? Conclusion
  3. 3. What is a virus? A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user. The computer viruses can damage or corrupt data, modify existing data .
  4. 4. Types of virus Boot sector Virus Master Boot Record virus (MBR) File infector virus  Multipartite virus  Macro Virus Trojan Horse  Worms Logic Bombs Polymorphic Virus
  5. 5. Boot sector Virus  A boot sector virus infects boot sector of computers. During system boot, boot sector virus is loaded into main memory and destroys data stored in hard disk. E.g. Form, Disk Killer, Michelangelo, Stoned.
  6. 6. Master Boot Record virus (MBR) MBR viruses are memory-resident viruses that infect disks in the same manner as boot sector viruses. E.g. AntiEXE, Unashamed, NYB
  7. 7. File infector virus File infector viruses infect program files. Normally infect executable code, such as .COM, .SYS, .BAT and .EXE files. E.g. Snow.A, Jerusalem, Cascade
  8. 8. Multipartite virus A multipartite virus is a virus that can infect either boot sectors or executables. When it infects a boot sector, it works as a boot sector infector. E.g. One_Half, Emperor, Anthrax, Tequilla.
  9. 9. Macro Virus Macro viruses infect files that are created using certain applications or programs that contain macros. They infect documents created from Microsoft Office Word, Excel, PowerPoint and Access files. E.g.W97M.Melissa, Bablas, WM.NiceDay, W97M. Groov.
  10. 10. Trojan Horse A Trojan horse is a computer program that is hiding a virus or other potentially damaging program. Trojan horses can be included in software that you download for free or as attachments in email messages. E.g. Trojan.Vundo. Back Orifice, NetBus, SubSeven
  11. 11. Worms A computer worm is a self-replicating computer program. It uses a network to send copies of itself to other and it may do so without any user intervention. Work of worms delete files on a host system send documents via email E.g.W32.Mydoom.AX@mm
  12. 12. How do viruses work? Replicating itself Interrupting system/network use Modifying configuration settings Flashing BIOS Format hard drive/destroy data Using computer/network resources
  13. 13. How an Antivirus works? The antivirus software examines each and every file in a computer and examines its content with the virus definitions stored in its virus dictionary. E.g. Avira Kaspersky Norton Many more ……………
  14. 14. Thanks for your attention

×