{"id":3291,"date":"2025-11-03T15:19:40","date_gmt":"2025-11-03T15:19:40","guid":{"rendered":"https:\/\/idlayr.com\/?p=3291"},"modified":"2025-11-03T15:22:34","modified_gmt":"2025-11-03T15:22:34","slug":"el-gran-problema-de-los-numeros-reciclados-para-iniciar-sesion-con-identidades-basadas-en-el-movil","status":"publish","type":"post","link":"https:\/\/idlayr.com\/es\/blog\/el-gran-problema-de-los-numeros-reciclados-para-iniciar-sesion-con-identidades-basadas-en-el-movil\/","title":{"rendered":"El ENORME problema de la identidad e inicio de sesi\u00f3n a trav\u00e9s del m\u00f3vil - Recycled Numbers"},"content":{"rendered":"<p><strong>Utilizar un n\u00famero de tel\u00e9fono m\u00f3vil como credencial de identidad parece algo natural en el mundo actual, que da prioridad a los dispositivos m\u00f3viles y a las aplicaciones, y as\u00ed debe ser. Pero bajo la comodidad se esconde un grave riesgo.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Cuando los n\u00fameros de m\u00f3vil se utilizan sin estar vinculados de forma segura a la tarjeta SIM subyacente, se crean graves lagunas de seguridad. Los operadores de redes m\u00f3viles (ORM) reciclan habitualmente los n\u00fameros de m\u00f3vil inactivos y los reemiten, con una nueva tarjeta SIM, a nuevos usuarios. Este proceso puede ser r\u00e1pido, a veces en cuesti\u00f3n de semanas.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">El riesgo es que el nuevo propietario del n\u00famero de tel\u00e9fono m\u00f3vil tenga acceso a cualquier informaci\u00f3n en l\u00ednea. <\/span><span style=\"font-weight: 400;\">cuentas creadas por el propietario anterior, en las que se utiliz\u00f3 el n\u00famero de m\u00f3vil para iniciar sesi\u00f3n. Algunos ejemplos son cuentas de redes sociales, cuentas bancarias, registros sanitarios y cuentas de comercio electr\u00f3nico.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">\u00bfCu\u00e1l es el resultado? Adquisiciones accidentales de cuentas, fraudes y da\u00f1os a la reputaci\u00f3n de las empresas implicadas.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Es un gran riesgo, pero tiene f\u00e1cil soluci\u00f3n: vincular el n\u00famero de m\u00f3vil a la propia tarjeta SIM. Pero para entender por qu\u00e9 es fundamental, veamos primero c\u00f3mo se producen los n\u00fameros reciclados y por qu\u00e9 se han convertido en una amenaza de seguridad tan persistente.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3>Por qu\u00e9 se reciclan los n\u00fameros<\/h3>\n<p><span style=\"font-weight: 400;\">La demanda mundial de n\u00fameros de m\u00f3vil sigue creciendo, pero la reserva de n\u00fameros disponibles es limitada. Para mantener el ritmo, los operadores reciclan sistem\u00e1ticamente los n\u00fameros inactivos. Dependiendo del mercado, esto puede ocurrir en tan solo una semana. Un n\u00famero que en su d\u00eda estuvo vinculado a una cuenta bancaria, a un perfil en una red social o a una aplicaci\u00f3n m\u00e9dica puede ser reasignado inadvertidamente a un nuevo cliente.<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">En Estados Unidos, cada a\u00f1o se reciclan unos 35 millones de n\u00fameros de tel\u00e9fono, debido a la escasez de n\u00fameros asignables.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">En el Reino Unido, los proveedores de telefon\u00eda m\u00f3vil suelen reciclar los n\u00fameros en un plazo de 70-180 d\u00edas.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A <\/span><a href=\"https:\/\/recyclednumbers.cs.princeton.edu\/assets\/recycled-numbers-latest.pdf\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">estudio de 259 n\u00fameros reciclados<\/span><\/a><span style=\"font-weight: 400;\"> descubri\u00f3 que 215 eran efectivamente reciclados y segu\u00edan siendo vulnerables a la explotaci\u00f3n<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>El riesgo para la seguridad<\/h3>\n<p><span style=\"font-weight: 400;\">Cuando los n\u00fameros de m\u00f3vil se utilizan como identificadores digitales para cuentas en l\u00ednea, los n\u00fameros reciclados -los que se reasignan a nuevos usuarios tras ser desconectados- pueden crear graves riesgos para la seguridad y la privacidad. Un nuevo propietario puede acceder sin saberlo a las cuentas del anterior mediante el restablecimiento de contrase\u00f1as, c\u00f3digos de autenticaci\u00f3n de dos factores o servicios vinculados que sigan vinculados a ese n\u00famero. Esto puede llevar a la apropiaci\u00f3n de cuentas, exposici\u00f3n de datos e incluso fraude financiero.<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Adquisici\u00f3n de cuentas:<\/b><span style=\"font-weight: 400;\"> Los restablecimientos de contrase\u00f1a y los mensajes SMS de 2FA se env\u00edan a la persona equivocada.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Secuestro de mensajes:<\/b><span style=\"font-weight: 400;\"> Servicios como WhatsApp o Telegram pueden ser reclamados por el nuevo propietario.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Encadenamiento de fraudes:<\/b><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\"> Una vez dentro de una cuenta, los atacantes pueden pivotar e intentar obtener acceso a cuentas bancarias, monederos digitales y otros servicios vinculados.<\/span><\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">No s\u00f3lo corren peligro los usuarios. Las marcas que conf\u00edan en los SMS OTP o en la recuperaci\u00f3n de n\u00fameros de m\u00f3vil se exponen a da\u00f1os en su reputaci\u00f3n cuando los n\u00fameros reciclados abren la puerta al fraude.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3>Por qu\u00e9 el SMS OTP empeora las cosas<\/h3>\n<p><span style=\"font-weight: 400;\">Contrase\u00f1as de un solo uso por SMS (<a href=\"https:\/\/idlayr.com\/es\/blog\/sms-otp-2fa-fraude\/\">OTPs<\/a>) son problem\u00e1ticas en este contexto porque se basan en el n\u00famero de tel\u00e9fono y no en la propiedad verificada de la tarjeta SIM o el dispositivo. Cuando se recicla o transfiere un n\u00famero, las OTP por SMS pueden enviarse a un nuevo usuario que ahora controle ese n\u00famero, d\u00e1ndole acceso involuntario a las cuentas de otra persona. Adem\u00e1s, los mensajes SMS pueden ser interceptados mediante ataques de intercambio de SIM o exploits a nivel de red, lo que los hace vulnerables al fraude. En resumen, los SMS OTP suponen que la persona que tiene el n\u00famero es el propietario leg\u00edtimo de la cuenta, lo que se rompe cuando los n\u00fameros se reasignan o se ven comprometidos.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3>La mejor manera: Autenticaci\u00f3n basada en SIM<\/h3>\n<p><span style=\"font-weight: 400;\">La soluci\u00f3n no es abandonar los n\u00fameros de m\u00f3vil -son demasiado importantes-, sino verificarlos correctamente.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Cada n\u00famero de m\u00f3vil (llamado MSISDN) est\u00e1 vinculado a una tarjeta SIM (f\u00edsica o eSIM). Cada tarjeta SIM tiene un identificador f\u00edsico (el ICCID) y un n\u00famero que el operador de telefon\u00eda m\u00f3vil asigna a la SIM cuando asigna un n\u00famero de m\u00f3vil a esa tarjeta SIM y la entrega a un usuario. Este n\u00famero se denomina <\/span><a href=\"https:\/\/idlayr.com\/es\/blog\/msisdn-imsi-movil-2023\/\"><span style=\"font-weight: 400;\">IMSI<\/span><\/a><span style=\"font-weight: 400;\"> (Identidad internacional de abonado m\u00f3vil). Es la combinaci\u00f3n del n\u00famero de m\u00f3vil y la identidad SIM que debe comprobarse al utilizar el m\u00f3vil como credencial de identidad.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Si tu m\u00e9todo de verificaci\u00f3n s\u00f3lo comprueba el n\u00famero de m\u00f3vil (que es lo que hace el SMS OTP) y no la tarjeta SIM, corres el riesgo de que cuando se recicle el n\u00famero de m\u00f3vil no lo sepas y corras el riesgo de exponer datos de usuario, PII, y permitir el acceso no autorizado a la cuenta.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Al verificar no s\u00f3lo el n\u00famero de m\u00f3vil, sino tambi\u00e9n la tarjeta SIM, puede asegurarse de que la SIM vinculada actualmente a ese n\u00famero es leg\u00edtima, est\u00e1 activa y coincide con la identidad digital establecida del usuario. Si el n\u00famero se ha reciclado o la tarjeta SIM ha cambiado, el sistema puede detectar la falta de coincidencia y activar un nuevo proceso de verificaci\u00f3n antes de conceder el acceso. En <\/span><a href=\"https:\/\/idlayr.com\/es\/productos\/encuadernacion-de-dispositivos-moviles\/\"><span style=\"font-weight: 400;\">unir el n\u00famero, la SIM y la identidad verificada<\/span><\/a><span style=\"font-weight: 400;\">, Adem\u00e1s, las plataformas pueden mantener un v\u00ednculo de confianza \u201cvivo\u201d que se rompe autom\u00e1ticamente cuando se reasigna el n\u00famero, lo que elimina el riesgo de que las cuentas antiguas queden expuestas a los nuevos titulares del n\u00famero.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3>Construir una base de confianza con la identidad m\u00f3vil<\/h3>\n<p><span style=\"font-weight: 400;\">Los n\u00fameros reciclados son s\u00f3lo un ejemplo de c\u00f3mo los enfoques heredados, como el SMS OTP, ya no pueden garantizar la seguridad de los servicios digitales. El futuro est\u00e1 en la identidad m\u00f3vil determinista y en tiempo real: verificar los n\u00fameros de m\u00f3vil de forma segura con el operador de telefon\u00eda m\u00f3vil en tiempo real, vincular los n\u00fameros a las SIM y eliminar al ser humano del modelo de seguridad.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Este cambio no s\u00f3lo reduce el fraude, sino que tambi\u00e9n ofrece la experiencia sin fricciones que los usuarios esperan ahora y crea una s\u00f3lida base de confianza sobre la que construir una identidad en l\u00ednea completa.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Descubra m\u00e1s sobre c\u00f3mo IDlayr puede ayudarle <a href=\"https:\/\/idlayr.com\/es\/productos\/numeros-reciclados\/\">resolver Reciclado N\u00famero riesgo<\/a>.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Using a mobile number as an identity credential feels natural in today\u2019s mobile-first, app-driven world, and it should be. But beneath the convenience lies a serious risk. &nbsp; When mobile numbers are used without being securely linked to the underlying SIM card, serious security gaps are created. Mobile Network Operators (MNOs) routinely recycle inactive mobile [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":3292,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[59,63],"tags":[],"class_list":["post-3291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fraud","category-online-identity"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>The HUGE issue with mobile-based identity &amp; login - Recycled Numbers - IDlayr<\/title>\n<meta name=\"description\" content=\"When mobile numbers are used without being securely linked to the underlying SIM card, serious security gaps are created.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/idlayr.com\/es\/blog\/el-gran-problema-de-los-numeros-reciclados-para-iniciar-sesion-con-identidades-basadas-en-el-movil\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The HUGE issue with mobile-based identity &amp; login - Recycled Numbers\" \/>\n<meta property=\"og:description\" content=\"When mobile numbers are used without being securely linked to the underlying SIM card, serious security gaps are created.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/idlayr.com\/es\/blog\/el-gran-problema-de-los-numeros-reciclados-para-iniciar-sesion-con-identidades-basadas-en-el-movil\/\" \/>\n<meta property=\"og:site_name\" content=\"IDlayr\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-03T15:19:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-03T15:22:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/idlayr.com\/wp-content\/uploads\/2025\/11\/recycled-mobile-numbers-risk.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"576\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Paul McGuire\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theidlayr\" \/>\n<meta name=\"twitter:site\" content=\"@theidlayr\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Paul McGuire\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/idlayr.com\\\/blog\\\/the-huge-issue-with-mobile-based-identity-login-recycled-numbers\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/idlayr.com\\\/blog\\\/the-huge-issue-with-mobile-based-identity-login-recycled-numbers\\\/\"},\"author\":{\"name\":\"Paul McGuire\",\"@id\":\"https:\\\/\\\/idlayr.com\\\/#\\\/schema\\\/person\\\/2e2005b12b1c34d317856764476870e9\"},\"headline\":\"The HUGE issue with mobile-based identity &#038; 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