{"id":8059,"date":"2026-08-19T11:11:30","date_gmt":"2026-08-19T09:11:30","guid":{"rendered":"https:\/\/viva.racunalniske-novice.com\/kako-lahko-potekle-brezsticne-kartice-ponovno-postanejo-placilno-sredstvo\/"},"modified":"2026-08-19T11:11:30","modified_gmt":"2026-08-19T09:11:30","slug":"kako-lahko-potekle-brezsticne-kartice-ponovno-postanejo-placilno-sredstvo","status":"publish","type":"post","link":"https:\/\/viva.racunalniske-novice.com\/es\/como-pueden-las-tarjetas-sin-contacto-caducadas-volver-a-ser-un-medio-de-pago\/","title":{"rendered":"\u00bfC\u00f3mo pueden las tarjetas sin contacto caducadas volver a ser un medio de pago?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Expertos de la Universidad UMass Amherst presentaron un estudio titulado \u201c<a href=\"https:\/\/www.usenix.org\/system\/files\/usenixsecurity26-anwar.pdf\">Tarjetas zombi de vuelta en l\u00ednea: Reviviendo tarjetas de cr\u00e9dito caducadas para pagos sin contacto<\/a>&quot;Detallaba c\u00f3mo se pueden reutilizar las tarjetas de pago sin contacto caducadas para compras en puntos de venta.&quot;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los pagos sin contacto se basan en el protocolo EMV, donde una tarjeta o un tel\u00e9fono inteligente se comunica con un terminal de punto de venta mediante tecnolog\u00eda NFC. Los mensajes viajan a trav\u00e9s de la red de pago hasta el banco y el emisor de la tarjeta. Los investigadores advierten que este proceso es vulnerable, ya que algunos datos se transmiten entre la tarjeta y el terminal sin cifrar y solo posteriormente se combinan con la verificaci\u00f3n criptogr\u00e1fica.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta vulnerabilidad de seguridad es susceptible de ser explotada. Utilizando dos tel\u00e9fonos inteligentes que actuaban como dispositivos proxy NFC, los investigadores lograron realizar un ataque de intermediario (man-in-the-middle). Descubrieron que las transacciones sin contacto en la red Visa eran vulnerables a este tipo de ataques debido a la falta de protecciones adecuadas para la integridad de los datos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El problema reside en el protocolo EMV. Mientras que Mastercard, American Express y Discover utilizan normas m\u00e1s estrictas, el sistema de Visa es m\u00e1s abierto. En las tarjetas Visa, la fecha de caducidad que lee el terminal no est\u00e1 protegida criptogr\u00e1ficamente mediante una firma digital. El terminal verifica la fecha impresa en la tarjeta, pero el banco emisor comprueba otra informaci\u00f3n al aprobarla. Dado que ambas informaciones no est\u00e1n vinculadas criptogr\u00e1ficamente, un atacante puede modificar la informaci\u00f3n que ve el terminal durante la transmisi\u00f3n, mientras que los dem\u00e1s elementos de seguridad parecen ser completamente v\u00e1lidos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El \u00e9xito pr\u00e1ctico del ataque depende de cada banco y de su sistema de procesamiento de transacciones. Sin embargo, estos hallazgos generan dudas, con raz\u00f3n, sobre la rigurosidad con la que las instituciones financieras verifican los est\u00e1ndares de seguridad antes de implementar esta tecnolog\u00eda de forma generalizada. El l\u00edder de la investigaci\u00f3n, Raja Hasnain Anwar, explic\u00f3 que se trata de un ajuste deliberado entre un alto nivel de seguridad y la velocidad de los terminales m\u00e1s antiguos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los autores notificaron a Visa sobre la vulnerabilidad en mayo de 2025 y nuevamente en diciembre de 2025. Hasta la fecha, ni Visa ni ninguno de los bancos notificados han confirmado haber corregido el fallo.<\/p>","protected":false},"excerpt":{"rendered":"<p>Strokovnjaki z ameri\u0161ke univerze UMass Amherst so na nedavni konferenci USENIX Security 2026 predstavili raziskavo z naslovom &#8220;Zombie Cards Back Online: Reviving Expired Credit Cards for Contactless Payments&#8220;. V njej so podrobno opisali na\u010din, kako je mogo\u010de potekle brezsti\u010dne pla\u010dilne kartice znova uporabiti za nakupovanje na prodajnih mestih. Brezsti\u010dno pla\u010devanje temelji na protokolu EMV, pri [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[478,484],"class_list":["post-8059","post","type-post","status-publish","format-standard","hentry","tag-informacijska-varnost","tag-visa-kartica"],"acf":{"subtitle":"","heading":"","summary":"Raziskovalci so dokazali, da je z napadom NFC proxy mogo\u010de uporabiti potekle brezsti\u010dne kartice Visa. Zaradi odsotnosti kriptografske za\u0161\u010dite datuma poteka na kartici terminali spregledajo neveljavnost, kar omogo\u010da izvajanje nepoobla\u0161\u010denih pla\u010dil.","thumbnail_small":"https:\/\/racunalniske-novice.com\/wp-content\/uploads\/2026\/08\/ignartonosbg-visa-6947134_1920-560x315.jpg","thumbnail_large":"https:\/\/racunalniske-novice.com\/wp-content\/uploads\/2026\/08\/ignartonosbg-visa-6947134_1920-1024x683.jpg","thumbnail_caption":"Foto: Pixabay","gallery":"","video_gallery":null,"author":"","links":[{"title":"Usenix","url":"https:\/\/www.usenix.org\/system\/files\/usenixsecurity26-anwar.pdf"}],"sources":[{"title":"theregister","url":"https:\/\/www.theregister.com\/security\/2026\/08\/18\/expired-credit-cards-revived-by-researchers-to-make-unauthorized-payments\/5289229"}],"skip_language":[]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kako lahko potekle brezsti\u010dne kartice ponovno postanejo pla\u010dilno sredstvo? - Ra\u010dunalni\u0161ke novice<\/title>\n<meta name=\"description\" content=\"Raziskovalci so dokazali, da je z napadom NFC proxy mogo\u010de uporabiti potekle brezsti\u010dne kartice Visa. Zaradi odsotnosti kriptografske za\u0161\u010dite datuma poteka na kartici terminali spregledajo neveljavnos\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/viva.racunalniske-novice.com\/es\/wp-json\/wp\/v2\/posts\/8059\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kako lahko potekle brezsti\u010dne kartice ponovno postanejo pla\u010dilno sredstvo? - Ra\u010dunalni\u0161ke novice\" \/>\n<meta property=\"og:description\" content=\"Strokovnjaki z ameri\u0161ke univerze UMass Amherst so na nedavni konferenci USENIX Security 2026 predstavili raziskavo z naslovom &#8220;Zombie Cards Back Online: Reviving Expired Credit Cards for Contactless Payments&#8220;. V njej so podrobno opisali na\u010din, kako je mogo\u010de potekle brezsti\u010dne pla\u010dilne kartice znova uporabiti za nakupovanje na prodajnih mestih. 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