Cyber Cross puzzle

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Across
  1. 4. Malware disguised as legitimate.
  2. 6. BONUS: THIS IS THE PASSCODE FOR THE ANSWERS. Don't use "x" for your x.
  3. 7. Records keystrokes secretly.
  4. 9. Demands payment to unlock data.
  5. 10. Code injection attack.
  6. 11. Exploit unknown to developers.
  7. 14. Monitors and controls network traffic.
  8. 16. Malware that hides its presence.
  9. 17. Network of infected computers.
  10. 19. Secure private network connection.
  11. 20. Software designed to harm.
Down
  1. 1. Software to detect and remove malware.
  2. 2. Overwhelms server with traffic.
  3. 3. Systematic password guessing.
  4. 5. Hidden access to a system.
  5. 8. Software update to fix vulnerabilities.
  6. 12. Converts data into code.
  7. 13. Authentication: Adds extra security layer.
  8. 15. Manipulating people for info.
  9. 18. Malware that spies on users.