Halt stops card-testing bots before the card is charged. Card testing is when a bot runs stolen card numbers through your checkout to find the ones that work. Each try costs you a card fee that a refund usually does not bring back. Halt checks every checkout inside Shopify and stops the ones that reuse the same email, address, or phone within a day. Customers who have ordered from you before are never stopped. It starts in watch mode: you see what it would stop before it stops anything.

• Stops repeat checkouts from the same email, address, or phone in one day
• Works on every Shopify store, including Basic. Nothing to add to checkout
• Starts in watch mode: see what it would stop before it stops anything
• Bait product: a trap item only bots buy, never affects logged-in customers
• Emails you when an attack starts, plus a daily summary on busy days