https://kaidn.io/blog Signal research, teardowns of real abuse patterns, and the engineering behind the Kaidn fraud API. en https://kaidn.io/blog/fingerprinting-blocked-agent https://kaidn.io/blog/fingerprinting-blocked-agent We ran both engines in the same page loads across Tor, Mullvad, Brave and Camoufox. Every number, including the two rounds where our own detector was the one that was wrong. Research Tue, 18 Aug 2026 00:00:00 GMT https://kaidn.io/blog/disposable-email-detection https://kaidn.io/blog/disposable-email-detection A list of throwaway domains catches the lazy attempt. The one that costs you money uses a real Gmail address, six times, and every heuristic you would reach for first is wrong. Research Mon, 03 Aug 2026 00:00:00 GMT https://kaidn.io/blog/mcp-fraud-investigation https://kaidn.io/blog/mcp-fraud-investigation Most fraud APIs hand an AI agent a risk score and nothing else. We built one that hands over the evidence, and it changed how review queues actually get worked. Engineering Sun, 02 Aug 2026 00:00:00 GMT