Your Shredded Visa Card May Still Work at the Checkout
UMass Amherst researchers demonstrated expired Visa contactless cards can complete real purchases via relay attacks exploiting Visa Kernel 3's unsigned expiry date handling.
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- First seenAug 20, 2026
- Last mentionedAug 21, 2026
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3 articles · newest firstZombie Card Attack Can Revive Expired Visa Cards for Contactless Payments
UMass Amherst researchers demonstrate Zombie Card, an NFC relay attack that revives expired Visa contactless cards for in-store purchases without breaking cryptography.
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Researchers find a loophole that lets expired credit cards make unauthorized payments
UMass Amherst researchers showed at USENIX Security 2026 that NFC relay attacks can rewrite unprotected expiration dates, letting expired Visa contactless cards keep making payments.
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Appears with
- American Expressvendor · 3
- University of Massachusetts Amherstorganization · 3
- Mastercardvendor · 3
- Visavendor · 3
- Visa Kernel 3product · 2
- SumUp Plusproduct · 1
- Khwarizmi Laborganization · 1
- USENIXorganization · 1
- five major US banksvictim · 1
- SumUpvendor · 1
- SumUp Soloproduct · 1
- EMVCoorganization · 1
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