Cashback reward engines allow double-dipping on rewards after refunds due to missing adjustments or timing gaps, as demonstrated by experiments on six real issuers.
Is- sue Spotlight: Credit Card Rewards," Consumer Financial Protection Bureau, May 9
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Refunded but Rewarded: The Double Dip Attack on Cashback Reward Engines
Cashback reward engines allow double-dipping on rewards after refunds due to missing adjustments or timing gaps, as demonstrated by experiments on six real issuers.