Cart Block: checkout validator

Love Cart Block app. This is by far the most versatile and flexible in terms of blocking rules.

Many apps promised email, address and phone number blocks but will require you to entre the exact value. Cart Block is the only app that offers "fuzzy block" rule where you can block checkouts containing certain values.

My store was hit by card testers, who were using my payment gateway to test stolen credit cards. With Cart Block app, it mitigated the risk with payment gateway. I tried many apps like Blockify, BoosterMark, Negate etc. None of them were as flexible as Cart Block.

When I reached out for support, Andrea replied promptly and implemented additional blocking parameters for me to use. This level of customer-centric approach plus the flexibility of the app means that I was able to ward off attempts at credit card fraud.

I will highly recommend this app to any merchants who experience card tester fraud issues, or anyone who requires product or geo blocking rules implemented at checkout.