Join the Elite Cyber Team

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Across
  1. 2. To protect data and humans ensure you have S?
  2. 3. You can't cause pain to a computer but this is real
  3. 4. Updated typewriter, spell checking and rocket launching.
Down
  1. 1. The largest WAN of these is the internet.
  2. 2. Subject does research & development, lab coats optional.
  3. 4. Attack that damages or destroys online systems is called?