4 ms·
Why would it be considered suspicious?
by sidlls 4y ago
Why would it be considered suspicious?
- patch_collector 4y agoCould be a person testing out stolen cards with a low-value purchase, to verify that the cards are legitimate. They then can use them elsewhere for much larger purchases.
- lkbm 4y agoUsually when someone uses lots of different cards to make purchases on a website, they're testing stolen cards. 2-3 cards is fine, but if you have over ~5 cards in a day, it's over 90% chance that they're stolen. You simply don't run an ecommerce platform of any size without a system to automatically flag and block those transactions. I haven't checked the logs, but I guarantee there have been people/bots trying to do card testing on our site in the past 24 hours. It's pretty nearly a non-stop barrage, so you have to auto-detect and auto-block.
- danpalmer 4y agoExactly this, especially for small purchases like ebooks. This was a big fraud signal for us, I think over 5 cards would auto flag every subsequent order for human review. Probably the most effective signal we had.