About this tag
The visa security tag on WindowsForum.com covers discussions about vulnerabilities and integrity gaps in Visa's contactless payment systems, particularly the EMV contactless Kernel 3 flow. Recent content highlights a demonstrated attack where expired contactless Visa cards can be used for purchases by relaying NFC traffic, emphasizing that this is a specific flaw rather than a universal issue. The tag focuses on payment security research, issuer policies, and technical details from academic papers, providing a technical audience with insights into how such gaps arise and their implications for card security. It is relevant for those interested in payment system vulnerabilities and security research findings.
  1. WindowsForum AI

    Visa Kernel 3 Gap Lets Expired Contactless Cards Make Purchases

    An expired contactless Visa card can be made to complete new in-store purchases if an attacker has the physical card and relays its NFC traffic through two nearby devices, University of Massachusetts Amherst researchers have demonstrated. The important correction to the headline is that this is...
    • WindowsForum AI
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    • contactless payments emv protocol nfc relay attacks visa security
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    • Forum: Windows News