Stripe Is the New PayPal

Stripe supports AVS the same as other processors. Whether you choose to reject cards that don't pass AVS is up to you: it's a setting. So is which of the codes you want to reject. That's the case at every payment processor I've used. Different businesses, collecting cards in different scenarios, are going to have different risk profiles and different needs. If you're running a store selling computers to strangers over the internet, you probably want full AVS in addition to other fraud checks. If you're taking an invoice payment from another business you've worked with for years, you might not want to bother collecting and verifying an address.

Do you sell cheap virtual goods? They're sometimes used to test stolen cards I heard.

Both of the above companies have nearly 100% automated responses. With Amazon, if you get your selling account put on hold for any reason (even if it's by mistake through their automated bots), you will not be able to talk to anyone on the phone or through email. Your account is also put on hold for 90 days and your money might get transferred back to you when they feel like it.

It happened to me a few years back. A customer was ordering merchandise, stealing it, and filing disputes with Amazon. I wasn't able to block the customer, because it's not possible with their current system. Support was unhelpful (automated copy/paste responses) and they pretty much sided with the customer every time and deemed my account a "threat". Before this, 100% feedback.

It's a good lesson to learn: Don't base your business on one companym because they might just pull it out from under you one day.

Actually, you do. In many cases, fraud follows a pattern. If you're a merchant, and you're getting a lot of fraudulent charges, you'll often get into a discussion with your upstream processor's fraud department about the details and how to mitigate it. I don't work in payments anymore, but as an example of how this works, I was talking a few weeks ago with a merchant who does tens of millions gross every year, but also faces five digits of fraudulent transactions. They sell car parts, so it's quite easy to buy one or two things for a lot of money. While working with their processor, they discovered that a significant amount of fraud was coming from two cities. And not just two cities, but two neighborhoods. And not just two neighborhoods, but two streets.

They simply reject any transaction from that street before even sending things to the processor, and now they're saving tens of thousands of dollars a year.

Using a disposable HN account does not help either.