If you need a starting point to block those botnet affiliated networks, I started both a firewall …

Longtime user posting from a new account out of an abundance of caution. I founded an e-commerce marketplace startup. We use PayPal's Multiparty APIs (PayPal Commerce Platform) for checkout. For the 10 days, someone has been bombarding us with purchases that they later dispute. There's consistent pattern to it: * They use an email address that has no footprint online, always from the same two domains * They use an unverified PayPal account to pay * They pay a low amount, not always the same, in a narrow range for a digital item * All of the charges were disputed within a few hours They're not doing this through our API. The purchase process requires a browser because of the way our payment form is configured. There's an amount of variation to each purchase that tells us they're automating a browser. Logs indicate that they're changing IP each time. The events come in bursts and seem to b…