The Foresight Lab
Issue 10Chargeback abuse & false positives

The dispute that wasn't abuse

Serial chargebacks scream 'friendly fraud' — but sometimes the customer is genuinely the victim, and auto-fighting them costs you a loyal one. This week, the dispute is legit.

Aug 17, 2026 3 min read

What we're seeing

Friendly fraud' — a cardholder disputing a charge they actually made — is real and costly, and issuers increasingly auto-score repeat disputers as abusers. But the same surface pattern (several disputes) also describes a genuine victim of card theft or a string of merchant errors.

Treat every frequent disputer as an abuser and you punish exactly the customers who were defrauded — and you teach them to bank somewhere else.

Why your current stack misses it

  • A count-based rule sees 'N disputes in M months' and flags abuse — it can't tell whether the disputes are corroborated by real fraud signals.
  • Context (a confirmed account compromise, consistent merchant-error stories, a long clean history) is invisible to a threshold.

The signal pattern

  • Disputes line up with an independently confirmed card-compromise or breach window.
  • Disputed merchants and amounts are inconsistent with the customer's own spending fingerprint.
  • A long prior history with zero disputes, then a sudden cluster — an event, not a habit.
  • The customer cooperates: files reports, answers questions, behaves like a victim rather than a fraudster.

What you'd do Monday morning

  • Score disputes against corroborating fraud signals, not just a raw count.
  • Separate 'victim of theft' and 'merchant error' from true first-party abuse before auto-representment.
  • Protect long-tenured, cooperative customers from being mislabeled — measure the retention cost of false 'abuser' flags.
Now you try

Spot the Fraud

Read the case. Make the call. See how you score against The PreCogs.

Spot the Fraud
FL-10

A cardholder has filed four disputes in two months — your abuse model wants to brand them a serial chargeback abuser. Look closer before you write them off. Clear it (genuine), or hold it (abuse)?

Disputes4 in 60 days
History9 years, zero prior disputes
TriggerAll 4 fall inside a confirmed card-breach window
MerchantsUnfamiliar, out-of-state, unlike the customer's usual spend
CustomerFiled a police report; replaced the card; responsive
Spending fingerprintDisputed charges don't match their pattern
AccountNo cash-out behavior, no linked risky accounts
Model flag“serial disputer — likely friendly fraud”
Your call?
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