Defend against customer abuse, from sign-up to usage
Detect bad actors before they exploit your business's policies.
The opportunity
64% of merchants report an increase in first-party abuse in the past year.1 The cost is significant: according to Stripe data, global businesses lost $200B last year to refund abuse, free trial exploitation and unpaid bills alone.
Trained on Stripe's global network, Radar's AI helps protect your business so you can launch free trials, experiment with pricing models and test new growth strategies – without the risk of abuse.
Prevent customer abuse before it costs you.
Stay ahead of first-party fraud at every stage – not just at the moment of payment.
Reduce high-risk sign-ups and free trial abuse
Flag and block more bad actors at account sign-up without turning away legitimate customers. For AI companies, get the conversion benefits of free tiers and trials without costly token theft.
Sell through agents while minimising fraud
Distinguish legitimate agent-initiated transactions from fraud. Risk signals – such as likelihood of card testing or stolen cards – are stored and shared through Shared Payment Tokens (SPTs).
Defend your usage-based and post-pay revenue
Identify bad actors running up compute or storage bills before they churn without paying. Radar is built for the abuse patterns hitting AI companies hardest.
Detect abuse at scale with protection powered by the Stripe network
Prevent bad actors from exploiting your product.
Radar protects against emerging types of customer abuse.
Free trial abuse
Bad actors sign up for free trials with no intent to pay when required, using prepaid cards or cancelling immediately after access is granted.
Multi-account abuse
Bad actors create multiple accounts to repeatedly access free tiers, trials or promotions.
Account sharing
Multiple customers use the same account, violating your terms of service.
Bot abuse
Bad actors deploy automated and scripted behaviour that exploits self-serve flows at scale.
Pay-as-you-go abuse
Bad actors accumulate large usage bills and churn without paying when required. Particularly costly for AI companies.
Other types of abuse
Learn more about additional tactics bad actors use to exploit product and business policies and how Radar can help protect you.
Behind the scenes:
Cursor prevents fraud and customer abuse with Radar.
1 Merchant Risk Council and B2B International. 2026 Global eCommerce Payments & Fraud Report. Merchant Risk Council, 2026.