Promo abuse is the exploitation of promotions beyond their intent. The common patterns are familiar: creating multiple accounts to claim a one-per-member welcome bonus repeatedly, stacking offers in combinations the rules were meant to prevent, referring fake accounts to collect referral rewards, or timing returns to keep the reward and the refund.
A program offering 500 points for a first app purchase might find a cluster of accounts, each tied to a slightly altered email and the same device, each claiming the bonus once and going dormant. The activity looks like enrollment growth until someone examines the pattern behind it.
For an operator, promo abuse is a direct drain on budget and a distortion of the metrics used to judge the program. Sign-ups and redemptions inflate while real engagement does not, which can send strategy in the wrong direction. Programs contain abuse with eligibility rules, velocity limits, device and identity checks, and monitoring that flags behavior no genuine member would produce, then tune the controls so they stop abusers without adding friction for real members.