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UID:pretalx-coscup-2026-GQGLDL@pretalx.coscup.org
DTSTART;TZID=CST:20260808T142000
DTEND;TZID=CST:20260808T145000
DESCRIPTION:South Asia's digital payment ecosystem is growing fast but the 
 fraud infrastructure protecting it hasn't kept up. Platforms serving milli
 ons of users often lack real-time device intelligence\, have no way to det
 ect SIM swap attacks without KYC dependency\, and can't share signals acro
 ss providers without exposing customer data. The threat model is also genu
 inely different here: attackers exploit device cycling\, identity reuse ac
 ross platforms\, and the absence of cross-institution coordination in ways
  that Western fraud tooling simply isn't designed for.\n\nThis talk explor
 es how you can address these gaps using open-source infrastructure: Go\, N
 ATS\, PostgreSQL\, Python and why releasing client SDKs openly matters as 
 much as the system design itself. We'll cover phone-hash-based SIM swap de
 tection\, weighted real-time fraud scoring with cold-start constraints\, d
 evice fingerprinting without invasive data collection\, and the architectu
 re of a scoring pipeline designed to run at payment speed.\n\nThese are le
 ssons learned firsthand while building a fraud detection platform targetin
 g Nepal's payment ecosystem the technical decisions\, the dead ends\, and 
 what a working open-source approach actually looks like in practice.
DTSTAMP:20260713T142420Z
LOCATION:TR211
SUMMARY:Building fraud detection infrastructure for the unprotected: open-s
 ource fintech from Nepal - Aaditya Binod Yadav
URL:https://pretalx.coscup.org/coscup-2026/talk/GQGLDL/
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