21st Feb, 2013

Introduction

How does it spread

Types of Computer Viruses

Prevention, Cure and Antivirus Software

Conclusion

Computer Viruses – Page2

Flow of presentation

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Introduction

Computer viruses are a type of software program that, like a biological 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

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How does it spread

Computer viruses spread by attaching themselves

to other computer program files.

When you exchange a file or pen drive

with a virus, the virus spreads from one computer to the another.

Viruses also spreads when a Computer

Engineer comes to repair your system and puts his/her

diagnostics disks in your PC.

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How does it spread

Computer viruses usually spread in one of three ways: from removable media; from downloads off the Internet; and from e-mail attachments.to other computer program files.

Also Computer Viruses has many ways to spread like :

Infected Software

Instant Messaging

Fake Anti Virus Software

Friends and Relatives

Email attachments

Rogue Websites

Networks  and Hackers

From Mobile Devices

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Types of computer viruses

Boot viruses:- The boot virus copies the virus code in the boot sector.

Worms:- Worms are program that replicate and spread to other system.

Trojans:- A Trojan is a program file that claims to do something but it actually does something that is not required.

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Types of computer viruses

Polymorphic viruses:- They are coded in such a way that they infect a system and change their signature.

Macro viruses:- Macros are blocks of code written to automate frequently performed tasks and embedded in a program file.

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Preservation and cure Install an Antivirus software.

Keep Your Antivirus Software Up To Date

Make Sure You Have AntiSpyware Software Also.

Set Up Full System Scans.

Install only registered copies of software on the system.

Install a Software Firewall

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Preservation and cure Regularly update the program.

Open email attachment files only if you are expecting the attached files, or the sender is known and has confirmed sending the file.

Try to avoid downloading and installing software from the Internet.

Install only registered copies of software on the system.

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Antivirus Software

Norton Anti-Virus

MaCfee

Avast

Quick Heal

Panda

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Conclusion

For better and safe computation anti-virus software should be installed and be helpful for global network system freely.

Computer Viruses – The End

www.asna.p2h.info

Yousuf Al-Harbi.

Zaki Alnajim.

Mansour Al Faridi.

Fahad Al-Mutairi.

If you have any inquiry or question about our presentation, we will happy to answer it.

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