What does it mean when a bot detection tool says it has 106 independent checks?

It means the tool uses 106 separate objective facts about a visit to build a reliable picture. The Hex-Edited CDP Leak is one of those checks on the Evasion, Debugger, and Anti-Stealth Traps page. Having many checks makes it harder for automated browsers to hide because they would need to match all of them. BotRefund uses these checks together with cross-checked context and AI prediction.