Virus

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This Virus ppt is something which tells the types of viruses and its uses.

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Virus

  1. 1. VIRUS. . .
  2. 2. Done by, PL.Sriram
  3. 3. It is a jungle out there Hoaxes Network worms Trojan horses
  4. 4. Salient features of a virus <ul><li>Computer program. </li></ul><ul><li>It can copy itself . </li></ul><ul><li>Infect a computer . </li></ul><ul><ul><li>Spreads from one computer to other. </li></ul></ul><ul><li>Executable </li></ul>
  5. 5. Virus affection 1. In 2004 a computer virus infected 1 million computers within one hour. 2. Virus has the power and capacity to destroy all files.
  6. 6. Different types of virus are, Macro virus Directory virus Polymorphic virus Companion virus FAT virus
  7. 7. Directory virus Changes the path that indicate the location of a file. For example:The File extension becomes.EXE or .COM
  8. 8. POPULAR HOAXE <ul><li>JDBGMGR (teddy-bear icon) </li></ul>It, Tricks users into deleting a file
  9. 9. Network Worm <ul><li>No host (self-contained) </li></ul><ul><li>Copies itself </li></ul><ul><li>Executable </li></ul>
  10. 10. Trojan Horse <ul><li>No host (self-contained) </li></ul><ul><li>Does not copy itself </li></ul><ul><li>Type of virus </li></ul>
  11. 11. A Trojan Horse exploits computer ports letting its “friends” enter, and MORE ON THE HORSE……. “ once a thief gets into your house he opens a rear window for his partners”
  12. 12. STOPPING THE TROJAN HORSE How does it get in? Downloading a file By: Installing a program Opening an attachment Copying a file from someone else
  13. 13. TYPICAL SYMPTOMS <ul><ul><li>File deletion </li></ul></ul><ul><ul><li>File corruption </li></ul></ul><ul><ul><li>Visual effects </li></ul></ul><ul><ul><li>Erratic (and unwanted) behavior </li></ul></ul><ul><ul><li>Computer crashes </li></ul></ul>
  14. 14. POPULAR FALLACIES <ul><li>If I never log off then my computer can never get a virus </li></ul><ul><li>If I lock my office door then my computer can never get a virus </li></ul><ul><li>Companies create viruses so they can sell anti-virus software </li></ul>My ISP will protect me? <ul><li>Microsoft will protect me </li></ul>
  15. 15. Antiviruses Mcafee Bit defender G Data Webroot Kaspersky Norton antivirus
  16. 16. Purpose of a virus ? Who created virus ? For what reason ? Who created anti-virus ? For what ? THINK.....

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