Security Systems

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Across
  1. 1. protection from harm
  2. 3. protected and not in danger
  3. 4. to stop something from happening
  4. 6. unwanted junk mail
  5. 8. something that may cause damage
  6. 10. software that tries to prevent problems
  7. 11. to ruin something
  8. 12. an operating system
Down
  1. 2. an electronic message
  2. 5. an electronic device that stores and processes data
  3. 6. program that protects your computer from harm
  4. 7. program designed to destroy your computer
  5. 9. someone who breaks into computer systems