[ Infosec Connections ]

#???
Mistakes remaining: ● ● ● ●
how to play
  1. Find the four hidden categories. Each category has exactly 4 terms.
  2. Tap up to 4 tiles, then submit. Get a group right, it locks in as a coloured row.
  3. You have 4 mistakes. Use them wisely — some terms plausibly fit more than one category.
  4. Difficulty goes easy → → → tricky.
  5. New puzzle every day at midnight UTC. Streak bumps on each solved day.