Card Testing

A fraudulent practice where criminals test stolen credit card numbers with small transactions to verify their validity before making larger purchases

Card Testing is a fraudulent technique where criminals verify stolen credit card information by making small test transactions before attempting larger fraudulent purchases, often using automated methods to process multiple cards quickly.

Characteristics

  • Small amounts
  • Rapid testing
  • Multiple attempts
  • Automated processes
  • Pattern testing

Warning Signs

  • Frequent transactions
  • Low-value purchases
  • High decline rates
  • Repeated attempts
  • Unusual timing

Detection Methods

  • Velocity monitoring
  • Pattern analysis
  • Amount tracking
  • Device identification
  • Behavior profiling

Prevention Strategies

  • Transaction limits
  • Fraud scoring
  • Authentication rules
  • Velocity checks
  • Risk assessment

Security Measures

  • CVV verification
  • Address validation
  • Device fingerprinting
  • IP monitoring
  • Behavior analysis

Best Practices

  • Real-time monitoring
  • Quick response
  • System updates
  • Staff training
  • Data analysis

Card testing is often a precursor to larger-scale credit card fraud.