This rule monitors high-value transactions using the same international card repeatedly, which may indicate card testing before major fraud or money laundering.

Triggers when:
1. Same international card processes multiple high-value transactions
2. Cumulative value or single transaction exceeds thresholds
3. Pattern unusual for international card usage

Repeated high-value international card use is flagged because:
- Stolen international cards often tested at increasing amounts
- Money laundering using same card for multiple large transfers
- Business email compromise payments processed in stages
- Account takeover with fraudster conducting multiple transfers
- Cross-border merchant collusion for fraud schemes

International cards have elevated risk because:
- More difficult to verify cardholder across borders
- Challenging fraud investigation and recovery
- Higher chargeback likelihood
- Jurisdictional complications for enforcement

System analyzes:
- Transaction frequency and timing
- Amount progression (testing pattern)
- Merchant types accessed
- Geographic consistency

Alert enables:
- Issuing bank notification for fraud screening
- Cardholder verification through international channels
- Merchant validation of goods/services delivered
- Pattern analysis for organized fraud indicators