Card Testing Log Analysis Process: A Merchant Detection Guide
Analyze authorization logs for card testing: baseline traffic, score velocity, correlate BIN and geography, and trace decline-then-approval probes.
Redeem your gift cards at any of our Merchants
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Onyx Gift Cards is a Grenadian company designed to introduce, market and manage gift cards systems in Grenada for retailers and corporations. We are enthusiastic about the effect and influence we will have on the local market. We intend to expand our systems regionally with a range of product offerings and services.
Gift cards are the preferred way of giving and receiving gifts. They carry a monetary value that can be redeemed for gifts at your favorite store.
Onyx GiftCards are “Open Gift Cards” which means that they can be redeemed at multiple merchant locations. They are standard credit card size, can fit into the average wallet and made of PVC plastic. Onyx GiftCards are Barcoded for security and safety for the consumer and bear a disclaimer at the back.
Onyx Giftcards can be bought with a branded Card backer which is black in colour and is designed to fit the card. There is an area to write a brief message to the recipient as well.
Card testing logs analysis is the process of reviewing payment and order-attempt records for patterns that indicate automated card-testing attacks. It helps merchants spot rapid low-value attempts, repeated declines, and clustered device or IP behavior before fraud losses and chargebacks grow, turning raw authorization logs into a clear, prioritized report.
The review works with standard authorization and order-attempt exports, including timestamps, response codes, BIN/country data, IP address, device identifiers, and order value. We normalize fields, remove duplicate events, and map activity to your chosen review window. Deliverables are provided as a structured report and machine-readable summary, with clear notes on assumptions and data gaps. No cardholder data beyond what your processor already provides is required.
This is a digital service: reports are delivered through your account after the review window closes, and no physical shipping is involved. If the deliverable does not match the agreed scope, contact support within the stated review period for correction or a replacement analysis. We keep project data confidential and follow secure handling practices throughout.
Yes. By identifying attack patterns earlier, teams can tighten velocity limits, block abusive sources, and route suspicious orders to manual review before fulfillment. The report supports prevention; it does not guarantee that every fraudulent attempt will be stopped.
It is built for ecommerce merchants, payment operations teams, and risk analysts who need a faster way to interpret card-testing activity in their logs. It is not a tool for testing cards or bypassing payment controls.