The primary purpose of a checker is to take a list of (potentially stolen) credit card information and test them against live payment gateways to see which ones are active and have sufficient funds. The "SK Key Exclusive" Explained
If your gateway supports it, restrict your SK key usage to specific IP addresses (the static IP of your production server). Even if an attacker steals the key, the exclusive checker will fail because it is executing requests from an unauthorized IP. Proactive Monitoring cc checker with sk key exclusive
This is not a mass-market tool. To maintain the integrity of our keys and prevent saturation, access is strictly limited. The primary purpose of a checker is to
For legitimate businesses, having an SK key compromised and used in an exclusive checker is catastrophic. cc checker with sk key exclusive