April 2025
Visa Acquirer Monitoring Program (VAMP)
Visa introduced an evolved VAMP consolidating multiple fraud and dispute programs into a broader acquirer monitoring approach.
April 2026 edition
Visa rules: High-Integrity Risk Merchants
Visa’s public rules include provisions for High-Integrity Risk Merchants and monitoring requirements through the acquiring relationship.
Ongoing
Mastercard security rules, BRAM and MATCH
Mastercard’s public rules and security materials govern merchant monitoring and acquiring responsibilities. Use the current official document when evaluating a live case.