If your goal is learning, set up your own Keyauth test environment (they offer free developer plans) and practice bypassing your own application. That is legal, educational, and far more rewarding than stealing from others.
But .NET applications can be obfuscated with ConfuserEx or Eazfuscator, making this more difficult. This is the most sophisticated method. You run a local server that mimics the real Keyauth API. Bypass Keyauth
Bots scan paste sites, Discord channels, and GitHub for exposed keys. Keyauth developers are not passive. They constantly update their SDK to block known bypasses. If your goal is learning, set up your