This document provides an overview of computer viruses. It discusses how viruses spread by attaching themselves to files and transferring between computers. Various types of viruses are described like boot viruses, polymorphic viruses, macro viruses, worms, and trojans. Symptoms of a virus infection include slow performance, reduced memory, and files becoming corrupted. The document recommends installing antivirus software, regularly updating it, and being cautious of email attachments to prevent and cure virus infections.
Computer Virus, Types of Viruses, Working of Virus, Methods to Prevent From Virus, How Virus Spreads, How a computer gets a virus, How are viruses removed, What is antivirus, How anti virus works,
OBJECTIVES
Introduction
What Is Virus?
Why Virus Are Called “Virus”?
How Do Virus Spread?
Virus Operation
How Virus work?
Common Virus Entry Points
Symptoms Of Virus Attack
Types of Computer Virus
Techniques used by Viruses
Anti-Virus Software
Methods used by Antivirus Software
Actions to Prevent Virus Infection
Conclusion
Virus and Anti Virus - Types of Virus and Anti VirusAdeel Rasheed
Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation. A virus might corrupt or delete data on your computer, use your e-mail program to spread itself to other computers, or even erase everything on your hard disk.
A computer virus is a malware program that when executed replicates by inserting copies of itself into other computer programs, data files. When this replication succeeds, the affected areas are then said to be infected. Viruses often perform some type of harmful activity on the infected hosts such as accessing private information, corrupting data or even rendering the computer useless. However, not all viruses carry a destructive payload or attempt to hide themselves.
Computer Virus, Types of Viruses, Working of Virus, Methods to Prevent From Virus, How Virus Spreads, How a computer gets a virus, How are viruses removed, What is antivirus, How anti virus works,
OBJECTIVES
Introduction
What Is Virus?
Why Virus Are Called “Virus”?
How Do Virus Spread?
Virus Operation
How Virus work?
Common Virus Entry Points
Symptoms Of Virus Attack
Types of Computer Virus
Techniques used by Viruses
Anti-Virus Software
Methods used by Antivirus Software
Actions to Prevent Virus Infection
Conclusion
Virus and Anti Virus - Types of Virus and Anti VirusAdeel Rasheed
Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation. A virus might corrupt or delete data on your computer, use your e-mail program to spread itself to other computers, or even erase everything on your hard disk.
A computer virus is a malware program that when executed replicates by inserting copies of itself into other computer programs, data files. When this replication succeeds, the affected areas are then said to be infected. Viruses often perform some type of harmful activity on the infected hosts such as accessing private information, corrupting data or even rendering the computer useless. However, not all viruses carry a destructive payload or attempt to hide themselves.
A Simple Presentation about Computer Security and Anti Viruses keeping in mind healthcare professionals as the target audience. Contains Definitions, Educational Content , Purchase and Free Options and a Simple tutorial on How to use Avast Free Edition
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Presentation on computer viruses
1. A Presentation On Computer Viruses
Name:- Nitish Xavier Tirkey
F.Y.BCA
Date:- 4th October, 2010
2. Flow of presentation
• Introduction
• Symptoms
• How does it spread
• Types of Computer Viruses
• Prevention and Cure
• Antivirus Software
• Conclusion
3. 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
4. Symptoms
• Letters looks like they are falling to the bottom of the
screen.
• The computer system becomes slow.
• The size of available free memory reduces.
• The hard disk runs out of space.
• The computer does not boot.
5. 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
6. Types of computer viruses
• Boot viruses:- The boot virus copies the virus code in
the boot sector
• 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
• 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
7. Preservation and cure
• Install an Antivirus software
• 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