Transmitting payment card details through electronic mail refers to the practice of conveying sensitive financial data, such as credit card numbers, expiration dates, and security codes, using email as the transmission medium. An instance of this would be an individual emailing their credit card number to a vendor for the purpose of making a purchase.
Historically, this method may have been employed for convenience; however, its prevalence has decreased due to the emergence of more secure payment methods and a heightened awareness of cybersecurity risks. The convenience afforded by this practice is significantly outweighed by the potential for data breaches and fraudulent activity, which can result in financial losses and identity theft.