security technology

Edit Answers
123456789101112
Across
  1. 3. layer
  2. 6. encryption scheme
  3. 9. system
  4. 10. control protocol
  5. 12. reads your mail
Down
  1. 1. layer
  2. 2. private network
  3. 4. key distribution
  4. 5. layer
  5. 7. protocol/internet layer
  6. 8. intercepts your mail and modify
  7. 9. mail and sign your name
  8. 11. risk