Download to read offline
More Related Content
Similar to Computer viruses
Computer viruses
- 2. S.NO CONTENTS 1 Introduction 2Symptoms 3 How Does It Spread? 4 Types of Computer Viruses 5 Prevention and Cure 6 Antivirus Software 7 Conclusion
- 3. Computer viruses area 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 Computer Virus also work on to make the system slow
- 4. The computer system doesnot reboot The size of available free memory reduces The hard disk runs out of space The computer system becomes slow Letters looks like they are falling to the bottom of the screen
- 5. When you exchangea file or pen drive with a virus, the virus spreads from one computer to the another Computer viruses spread by attaching themselves to other computer program files It also spreads when a Computer Engineer comes to repair your system and puts his diagnostics disks in your PC
- 6. Boot viruses:- Theboot 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 Trojans:- A Trojan is a program file that claims to do something but it actually does something that is not required Worms:- Worms are program that replicate and spread to other system Macro viruses:- Macros are blocks of code written to automate frequently performed tasks and embedded in a program file
- 7. Install an Antivirus software Regularly update the program Openemail attachment files only if the sender is known Try to avoid downloading and installing software from the Internet Install only registered copies of software on the system
- 8.