Slideshow Alisha Schnapper

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Slideshow Alisha Schnapper

  1. 1. By: Alisha Schnapper Computer Viruses
  2. 2. Definition of a virus <ul><li>A software program that has been designed by other computers users to cause destruction on a computer and than spread to others </li></ul>
  3. 3. Signs of a computer virus <ul><li>The computer runs slower than normal </li></ul><ul><li>The computer stops responding or freezes </li></ul><ul><li>The computer crashes and restarts </li></ul><ul><li>Applications don’t work correctly </li></ul><ul><li>Hard drives are inaccessible </li></ul><ul><li>The print button doesn't print correctly </li></ul><ul><li>Error signals pop up on the screen </li></ul>
  4. 4. 4 most common computer viruses Distribution: Shared Email Pirated software Shared USB stick Boot Sector- overwrites the boot sector on your hard drive or floppy disk Macro Virus- comes from a spread sheet or document through an email Adware- appears when advertisement pop up on the screen Trojan Horse- appear to be legitimate files. They don’t reproduce by infecting other files Worms- are detected and eliminated by anti-virus
  5. 5. Rich Skrenta <ul><li>Rich Skrenta developed the first virus in 1982 when he was 15 in high school </li></ul><ul><li>He named the virus the Elk Cloner that infected the original apple machines </li></ul>
  6. 6. Facts about Viruses <ul><li>There are tools that allow anyone to quickly scan large amounts of computers for vulnerabilities. </li></ul><ul><li>From the use of the internet that allows people to discover and identify information on the computer that can access your network. </li></ul><ul><li>Having an anti-virus is not enough for the safety of your computer but it is a crucial element. </li></ul>
  7. 7. Computer Viruses come from... Opening attached email Installing programs from the internet Not reading the licensing agreement Down loading Anti-spyware tools
  8. 8. <ul><li>Spyware is very similar to adware where it runs in the background without our knowledge </li></ul><ul><li>Main purpose is for marketing and research </li></ul><ul><li>They use this information to figure out what web programs run on your screen </li></ul><ul><li>Anti-Spyware: can be downloaded from the internet </li></ul><ul><li>Does little to remove the problem </li></ul><ul><li>Actually makes spyware worse </li></ul>Spyware and Anti-spyware
  9. 9. Protecting your computer <ul><li>Keeps your computer up-to-date </li></ul><ul><li>Have anti-virus installed </li></ul><ul><li>Be smart in your web browsing- no illegal downloading or pornography </li></ul><ul><li>Have caution when opening emails </li></ul>
  10. 10. Step for removing a virus <ul><li>1) Visit Microsoft and install the latest updates </li></ul><ul><li>2) From the supplier of the anti-virus software, visit the site, update the software and perform a complete scan </li></ul><ul><li>3) Download, and install the Malicious software tool from windows </li></ul>
  11. 11. References <ul><li>http://micorsoft.com </li></ul><ul><li>http://www.ontrackdatarecovery.com </li></ul><ul><li>http://software.4.reviews.net </li></ul><ul><li>http://essentialscomputersecurity.com </li></ul>

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