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New simulator models Pix instant-payment fraud with analyst constraints

Researchers have developed PixSim, an open-source simulator designed to model instant-payment fraud within Brazil's Pix system. This simulator incorporates elements such as irreversible settlement, regulated recovery mechanisms, and analyst capacity constraints, which were previously unaddressed in public simulators. PixSim has been calibrated using open data from the Banco Central do Brasil and accurately reproduces observed recovery rates. AI

RANK_REASON The item describes a new open-source simulator for a specific financial system, which falls under research. [lever_c_demoted from research: ic=1 ai=0.4]

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New simulator models Pix instant-payment fraud with analyst constraints

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  1. arXiv cs.LG TIER_1 English(EN) · Bashir Zeimarani, Alireza Khatib, Somayeh Mousavinasr, Carlos Maur\'icio Serodio Figueiredo ·

    PixSim: a calibrated open-source simulator of instant-payment fraud, recovery and interdiction under analyst capacity constraints

    arXiv:2609.30684v1 Announce Type: new Abstract: Brazil's Pix settles about 5.9 billion instant, irreversible transfers a month. A fraudulent transfer can be recovered only while the funds remain in a traceable account, and in 2025 the Central Bank's recovery mechanism (MED) retur…