Alternate CVC2a Security Code for Payment Card Fraud Prevention
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Solution Overview
Problem
The increasing use of chip cards has reduced credit card counterfeiting but has led to a rise in fraudulent card-not-present (CNP) transactions, where unauthorized access to CVC2 values compromises cardholder security, resulting in significant costs for issuers to replace cards and manage fraud.
Innovation Solution
A method and system for generating an alternate CVC2a value (CVC2a) that can be used with existing cards for CNP transactions without reissuing new cards, using an algorithm with an auxiliary issuer code instead of the primary issuer code, allowing continued card usage while restricting the compromised CVC2 value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cardholders use traditional CVC2 codes for CNP transactions, then transaction convenience is maintained, but security is compromised when CVC2 values are accessed by unauthorized parties
Solution Approach 1:
The patent changes the parameter of the security code by introducing an alternate CVC2a code that is algorithmically generated using different inputs (account number, expiration date, and service code) than the traditional CVC2. This parameter change allows the system to maintain transaction convenience while improving security, as the alternate code cannot be derived from compromised traditional CVC2 values.
2Reliability
If issuers replace compromised cards with new cards, then security is improved, but costs and processing time increase significantly
Solution Approach 1:
The patent creates a functional copy of the security mechanism by generating an alternate CVC2a code that serves the same purpose as the traditional CVC2 but uses different input parameters. This copying approach allows the system to maintain security without the need to physically replace cards, thereby avoiding the substantial costs associated with card reissuance while still providing a secure alternative for CNP transactions.
3Reliability
If issuers replace compromised cards, then fraud is prevented, but productivity and cardholder convenience deteriorate due to replacement processing time
Solution Approach 1:
The patent performs preliminary action by pre-generating alternate CVC2a codes that are ready for immediate use when traditional CVC2 codes are compromised. This preliminary preparation of alternate security codes eliminates the need for time-consuming card replacement processing, allowing fraud prevention to occur instantly without impacting transaction productivity or cardholder convenience.
4Device complexity
If traditional CVC2 authentication is used, then card validation is simple, but vulnerability to fraud increases when security codes are compromised
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of an alternate CVC2a code that mediates between the simplicity of traditional CVC2 authentication and the need for enhanced security. The alternate code serves as a middle ground that maintains the straightforward authentication process while adding a layer of security that prevents fraud even when traditional CVC2 codes are compromised, as the two codes are generated from different parameters.
Data Source
AI summary
An auxiliary security code called a CVC2a is generated to replace a CVC2 value that is presented on a payment card for verifying card-not-present (CNP) transactions without necessarily generating a replacement card. An enhanced card table/file is maintained by a payment network operator to facilitate transitional scenarios in which the payment cards are reissued or replaced.