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Show HN: Kairos – Open-source risk and fraud decisioning platform

Hacker News · 2026-11-03 · buzz 155 · 54 points / 7 comments

Hey HN, Ayan here from Finic. We’re launching Kairos, an open source alternative to Sift, Sardine, and other real-time fraud decisioning platforms. Kairos addresses two of the biggest problems facing traditional decisioning tools: a lack of labeled data to train on and dealing with fraudsters that are constantly changing their tactics.<p>1. Traditional fraud solutions use ML models such as XGBoost

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