Velocity Check

What is Velocity Check?

A velocity check is a fraud prevention technique that monitors the speed and frequency of transactions from a specific user, IP address, or credit card within a set timeframe. If the number of attempts exceeds a predefined threshold, the system flags or blocks the activity as suspicious.

Why It Matters

• It is highly effective at stopping automated attacks like card testing, where fraudsters try to validate many stolen cards quickly.

• Velocity checks help identify account takeover attempts where a hacker tries to drain funds or make multiple purchases in a short period.

• Merchants can customize velocity rules to match their typical business patterns and reduce the risk of blocking legitimate high-volume customers.