This rule provides enhanced monitoring for international card usage at newly onboarded merchants during their initial high-risk period.

Triggers when:
1. Merchant account age is less than 50 days from activation
2. International (foreign-issued) card is used
3. Merchant still in probationary monitoring period

New merchants using international cards are monitored because:
- Fraudulent merchant applications often target international transactions
- Cross-border transactions harder to verify and investigate
- New merchants lack established transaction patterns
- May indicate merchant account testing before large fraud attempt
- Higher chargeback risk during establishment phase

The 50-day window reflects:
- Critical risk period for fraudulent merchant identification
- Time needed to establish baseline international transaction patterns
- Standard new merchant probation period
- Early warning system before significant fraud exposure

Generates ALERT for enhanced validation without disrupting legitimate new international business relationships.