The Cyber Gridlock

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Across
  1. 3. I fail once and many may feet it
  2. 4. I look real, I sound real but i am not real
  3. 8. Password go in, Scrambled digits come out
  4. 10. Your files still exist, but you can't touch them unless you pay me
  5. 15. I answer without understanding, yet sound like I do
  6. 17. I wake the system up before it can do anything
  7. 18. Letting code play without letting it break anything
  8. 19. A tool that conceals malicious activity at the core level
Down
  1. 1. James Bond espionage but with Wi-Fi
  2. 2. Every key you press tells me a secret
  3. 5. I am strongest when I make no sense
  4. 6. Flaw exploited before anyone knows
  5. 7. I make you pay the electricity bill while i earn the coins
  6. 9. I am software, but I like Hardware
  7. 11. I understand only Zeros and ones, yet do everything
  8. 12. silent zombies working together for cyber attack
  9. 13. Delay before data begins to transfer
  10. 14. Inbox filler no one asked for
  11. 16. Two symbols endless meaning