FI/CONTROLFRAUD INTELLIGENCE CASE · SYNTHETIC DATABrandon Candela ↗

THE LEADERSHIP QUESTION

Which signals deserve
operational attention?

Investigate a synthetic fraud spike across accounts, devices and transactions. Tune the control, inspect linked behavior and explain what should change before the next incident.

Move the threshold to see workload, precision and missed cases change.

PRIORITIZED QUEUE

Accounts requiring attention

AccountScorePrimary signalLabel*

*Synthetic ground truth is shown for evaluation. A real operations team would not know it at decision time.

LINK ANALYSIS

Shared-device cluster

5 accounts · 1 device
D900
shared web device

A link is an investigative lead. Shared infrastructure, households and business devices can produce legitimate connections.

CONTROL HEALTH

Monitoring across four weeks

The final week’s data-completeness change is a monitoring signal. It does not by itself prove that the rule deteriorated.

INCIDENT RECONSTRUCTION

What the signals suggest

  1. 14:00–14:27Five accounts receive funds from multiple unrelated counterparties.
  2. 14:31–14:43Each account sends a high-value payment toward the same cash-out counterparty.
  3. LinkageThe accounts use the same newly observed web device.
  4. Alternative explanationA shared service provider or coordinated legitimate operation must be tested before escalation.

EXECUTIVE BRIEF

Turn the finding into a control improvement

The current evidence supports escalation of the linked cluster and targeted review of new-device payouts. It does not support treating every shared device or high fan-in account as fraud.