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This risk also applies to any card terminal where you pay contactlessly. In Europe, that effectively means every card terminal everywhere and a comfortable majo
by pimterry 5y ago
This risk also applies to any card terminal where you pay contactlessly. In Europe, that effectively means every card terminal everywhere and a comfortable majority of card transactions (https://www.mastercard.com/news/europe/en-uk/newsroom/press-releases/en-gb/2020/march/mastercard-enables-contactless-limit-raise-across-29-countries-and-champions-permanent-increase/ https://www.mastercard.com/news/europe/en-uk/newsroom/press-... says 75% of mastercard transactions in Europe are contactless).
The main protections against this are maximum limits for unverified contactless purchases (about €50, depending on the country) and banks outright guaranteeing customers against fraud (https://europa.eu/youreurope/citizens/consumers/financial-products-and-services/payments-transfers-cheques/index_en.htm#shortcut-2 https://europa.eu/youreurope/citizens/consumers/financial-pr...).
No idea how that can translate directly onto phone-based terminals though. On cards, the extra-validation backup for suspicious/over the daily limit transactions is that the contactless machine asks you for your pin, but there's no way anybody should be typing their card pin into a random stranger's iPhone.
- judge2020 5y agoThere are still attacks, eg. contactless purchase limits can be bypassed by simply telling the terminal "of course I am a CDCVM device, let me use the higher transaction limits": (page 18, with pages 10 and 12 showing the Visa/MC limits) https://i.blackhat.com/asia-20/Thursday/asia-20-Galloway-First-Contact-New-Vulnerabilities-In-Contactless-Payments-wp.pdf https://i.blackhat.com/asia-20/Thursday/asia-20-Galloway-Fir...
- thetinguy 5y agoAFAIK there are no contactless limits in the US. Also usually no pins on credit cards in the US only debit cards.