computer puzzle

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Across
  1. 3. using the language and thoughts of other persons as ones original work
  2. 5. acknowleding the original writer and the source it is taken
  3. 8. the computer that communicate with each other
  4. 10. multiple mismatch copies stored in different computers
  5. 11. criminal activities done by the use of computer or internet to harm someone
  6. 12. metropolitan area network
Down
  1. 1. sending bulk of mail to destroy the server
  2. 2. computer program that disrupts the normal functioning of the computer
  3. 4. duplication of data at multiple places
  4. 6. the highly technical people who secretly break into computer to steal information
  5. 7. the main cable is the backbone of this network
  6. 9. computer network restricted to an organization