I Stopped a Credit Card Thief and Saved Our Nonprofit

I've read this one a few times and each time I see it I keep getting more and more pissed at Stripe.

Customer: Hey, someone is using your product to steal money as I am seeing a ton of fraudulent donation transactions. Can you undo these?

Stripe: lol, no, u fix it

Why did the customer have to even think of writing a script to begin to unfuck the situation here? Why did the customer have to do a ton of legwork to fix the situation?

Terrifying story, but missing some obvious mitigations: rate limits. A rate limit on the number of transactions and the cumulative amount would have largely prevented this. It's saved me many times.