About this tag
The emv protocol tag on WindowsForum.com covers discussions about the EMV contactless payment standard, particularly its security and implementation details. Recent content focuses on a specific integrity gap in Visa's EMV contactless Kernel 3 flow, as demonstrated by University of Massachusetts Amherst researchers. This gap allows expired contactless Visa cards to complete new in-store purchases when an attacker relays NFC traffic through two nearby devices. The discussion clarifies that this is not a universal flaw but a targeted issue involving issuer policies on expiry and card replacement. Topics include NFC relay attacks, contactless payment security, and the technical aspects of EMV protocol versions, relevant to IT professionals and security researchers examining payment system vulnerabilities.
  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