Presentatin on computer viruses

• 1. A PRESENTATION ONCOMPUTER VIRUS PRESENTED BY: MIHIR ROAT F.Y.B.C.A

2. Flow of contents

• Introductionto computer

• Introduction to computer viruses ?

• Different types of viruses

• Causes & effects of computer viruses

• Prevention & cure of computer viruses

• Conclusion

3. Introductionto computer

• The term computer has been borrowed from compute that means to calculate

• A computer is a device the data input by the user, analyses it & gives a output to the user

• In laymen language a computer is a machine which reduces the work load

4. Introduction to Computer viruses

• A computer viruses are a type of software program, like a biological virus

• It causes various problems to computer system

• like : system failure , display problems , slow down you pc, etc.

• The symptoms of pc when it gets infected or virus

• Unusual & strange messages

• on the computer screen

continue 5. Introduction to computerviruses (contd)

• The virus affect the pc causing damage to system files, user data or other function of your computer

• Like biological virus this software viruses causes damage before the victim are aware of its existence

• Now we will see the major type of computer viruses & its effect on our pc

6. Type ofviruses

• There are about millions of viruses present & daily 6 to 7 new viruses are found

• The following are the types of viruses:

• Resident Viruses, Direct Action Viruses,Overwrite Viruses ,Boot-sector Virus ,Macro Virus , Directory Virus, Polymorphic Virus, File Infectors, Companion Viruses, FAT Virus, Worms,Trojans or Trojan Horses , Logic Bombs, etc.

7. Causes and effects of computer viruses

• Computer viruses spread by attaching themselves to the other computer program files(usually .exe, .com, .bat, .dll, )

• A computer virus may be hidden or protected from the users eye

• These viruses spread through infected files in Floppy, Cd, Usb pen drive & internet

8. Causes & effects of computer viruses

• A computerviruses can infect the program and it may lead to loss of important data

• These viruses are transfers to our data through any floppy or cd

• If any infected file is copy in your system then it will infect the other files and function too

9. Prevention & cure of computer viruses

• Since virus can cause extensive effect to your important files ,possible steps must be take to prevent attack on your pc

• If you use floppy diskto boot your pc then write protect it

• Make backups ofyour impotent files in floppy or cd and keep it in a safe place you will need it later

10. Prevention & cure of computer viruses (contd)

• Keep you system secure from viruses by using anti virus software

• Anti virus can scan the infected file in you data and can repair it.

• Keep your anti virus update so it can help you to prevent unwanted spams and viruses enter your computer through floppy, cd, usb or internet

11. Some anti viruses software 12. Conclusion

• I think we should not use the pc without any antivirus security as it may causedamage to our important data

• Do not copy or transfer any data or file without scanning the disk

13. Sources

• Data referred from pc book

• The following are the web site for information on computer viruses

• Isoftwarereviews.com

• Images from google.com

• eHow.com

14. Thank you