jmcbain writes: The Verge reports that a security researcher at DefCon outlined a number of attacks targeting Samsung Pay, Samsung's digital payment system that runs on their smartphones. According to the article, the attack "[focuses] on intercepting or fabricating payment tokens -- codes generated by the user's smartphone that stand in for their credit card information. These tokens are sent from the mobile device to the payment terminal during wireless purchases. [They expire 24 hours after being generated and are single-use only.]" In a response, Samsung said that "in certain scenarios an attacker could skim a user's payment token and make a fraudulent purchase with their card," but that "the attacker must be physically close to the target while they are making a legitimate purchase."