The biggest revenue leak in your business might not be fraud. It might be false positives.

Most merchants can tell you exactly how much fraud they lost last month. Very few can tell you how much revenue they lost by declining legitimate customers.

That’s the hidden cost of fraud prevention.

Every fraud act is a balance between catching more fraud and approving more legitimate customers. Push too far in one direction, and you’ll stop more fraud.

Push too far in the other, and you’ll lose good customers.

Every fraud act is really a question of precision.

• How aggressively do you want to detect potential fraud?
• How many legitimate customers are you willing to inconvenience in the process?

The reason is that fraud losses are visible. Chargebacks show up in reports, disputes get tracked, and losses are measurable.

False positives are not.

You don’t see the customer who failed verification once and left, got declined and bought somewhere else, abandoned checkout after extra friction, and never came back after a bad payment experience. That revenue rarely appears as lost, so it gets ignored.

Over time, it’s easy to optimise for the metric you can see.

So after every fraud incident, another rule gets added, another threshold gets tightened, and the system becomes a little more aggressive. Fraud might go down — but so can conversions, revenue, and customer lifetime value.

The best fraud strategies aim to make the best decisions. That means asking questions…

• Which fraud rules are preventing fraud?
• Which ones are blocking good customers?
• What’s the commercial impact of every decision we’re making?

Because those costs are spread across marketing, support, product, and commercial teams, they’re rarely traced back to the fraud decision that caused them.

The irony is that the fraud system is succeeding.

It’s blocking exactly the transactions it was trained or configured to block. The question is whether those are the right decisions for the business.

The best fraud strategies treat every decision as a balance between risk and customer experience. Preventing fraud is important — but protecting good customers is just as important.

If you’re looking to reduce fraud without sacrificing legitimate customers or revenue, we’re hosting a free webinar where I’ll share the frameworks I’ve used over the past decade to help merchants build more effective fraud strategies.

Grab your spot here.

P.S. What’s costing your business more — fraud or false positives?