Kavach, final round: a fraud investigator that shows its work, on TigerGraph

TigerGraph x Hacker House Goa 2026, final round. Team PixelPaws: Subhojyoti Maity and Arni Bachhar. In the first round we built Kavach ("shield"), an agent that investigates card-fraud alerts on a TigerGraph graph. The final round raised the bar: 18 new alerts, 650,938 transactions (July 2016 to January 2017), the bank's 5,585 closed cases, a written Fraud Policy v1.0, and 14 challenges that read…