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Protecting Yourself in Cyberspace

Protecting Yourself in Cyberspace. BBI 1O. Viruses. What are viruses? Are programs that insert themselves into your computer Are activated when you run an infected program or open a file Immediately start to replicate themselves by looking for new areas to infect. Viruses.

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Protecting Yourself in Cyberspace

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  1. Protecting Yourself in Cyberspace BBI 1O

  2. Viruses What are viruses? • Are programs that insert themselves into your computer • Are activated when you run an infected program or open a file • Immediately start to replicate themselves by looking for new areas to infect

  3. Viruses Are all viruses the same? Boot-sector File Macro

  4. Boot-Sector Viruses • Infect the boot sector of a computer’s disk or hard drive • It substitutes its code over code read by your computer when it is turned on or restarted

  5. File Viruses • Use a computer’s file system to propagate (grow and reproduce) • Work by infecting files when they are being opened, renamed, or saved • Cause messages to appear on screen

  6. Macro Viruses • Programs written in macro languages (programming language) • Are designed to operate in specific softwareapplications such as Microsoft Word, Excel and email applications • Instructions attached to a document file that tell the software application to perform commands automatically • Propagate by transferring from one infected file to another Melissa Virus

  7. Protecting Against Viruses • Use anti-virus software and a firewall • Back up your files regularly • Protect your computer with a password • Lock your computer when it is not in use

  8. Protecting Against Viruses • Firewall – software that prevents certain information from entering or leaving your computer when online • Anti-virus software scans your hard drive and other storage media to locate and destroy viruses • Scan all disks and removable storage with anti-virus software • Encryption – encode information in a manner that only the person (or computer) with the key can decode it

  9. It’s Viral! Your task: • Research 3 different types of anti-virus software that exist and what features they have • Research and briefly describe 5 of the worst computer viruses of all time

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