types of virus

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Across
  1. 1. The most dangerous virus
  2. 4. Virus that causes irrecoverable loss
  3. 5. virus that appears to be friendly
  4. 6. virus that duplicates itself
  5. 9. damages the computer witowner'swners knowledge
  6. 10. virus that appears to be an antivirus
Down
  1. 2. an antivirus
  2. 3. virus that affects the hard disk
  3. 7. CoolWebSearch is an example of
  4. 8. program file virus is also called ____ virus