{"id":1982,"date":"2025-04-24T18:44:21","date_gmt":"2025-04-24T18:44:21","guid":{"rendered":"https:\/\/www.captcha.eu\/?p=1982"},"modified":"2025-04-30T09:39:28","modified_gmt":"2025-04-30T09:39:28","slug":"what-is-sniffing","status":"publish","type":"post","link":"https:\/\/new.captcha.eu\/es\/que-es-olfatear\/","title":{"rendered":"\u00bfQu\u00e9 es el sniffing?"},"content":{"rendered":"<figure class=\"wp-block-image size-large is-resized\"><img data-dominant-color=\"8e81ad\" data-has-transparency=\"false\" fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"https:\/\/www.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-1024x576.png\" alt=\"Ilustraci\u00f3n digital plana que muestra una red inform\u00e1tica con paquetes de datos fluyendo entre dispositivos. Un dispositivo se resalta con una lupa, lo que simboliza el rastreo de paquetes, mientras que otros representan componentes t\u00edpicos de red, como enrutadores y servidores. Una figura encapuchada al fondo sugiere vigilancia no autorizada o espionaje cibern\u00e9tico.\" class=\"wp-image-1983 not-transparent\" style=\"--dominant-color: #8e81ad; width:1180px;height:auto\" srcset=\"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-1024x576.png 1024w, https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-300x169.png 300w, https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-768x432.png 768w, https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-1536x864.png 1536w, https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-18x10.png 18w, https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png 1920w\" \/><figcaption class=\"wp-element-caption\">Imagen generada por IA<\/figcaption><\/figure>\n\n\n\n<p>\u00bfAlguna vez has imaginado a alguien escuchando en silencio tus conversaciones en l\u00ednea o tu actividad digital? En el mundo digital, este tipo de espionaje no solo es posible, sino una amenaza conocida. La t\u00e9cnica se llama <strong>olfateando<\/strong>Es uno de los m\u00e9todos m\u00e1s comunes para interceptar datos en una red. A medida que las ciberamenazas se vuelven m\u00e1s sofisticadas, comprender qu\u00e9 es el rastreo, c\u00f3mo funciona y c\u00f3mo protegerse es m\u00e1s importante que nunca.<\/p>\n\n\n\n<div class=\"wp-block-yoast-seo-table-of-contents yoast-table-of-contents\"><h2>Tabla de contenido<\/h2><ul><li><a href=\"#h-what-is-sniffing-in-cybersecurity\" data-level=\"3\">\u00bfQu\u00e9 es el Sniffing en Ciberseguridad?<\/a><\/li><li><a href=\"#h-how-sniffing-works\" data-level=\"3\">C\u00f3mo funciona el olfateo<\/a><\/li><li><a href=\"#h-passive-vs-active-sniffing-attacks\" data-level=\"3\">Ataques de rastreo pasivos vs. activos<\/a><\/li><li><a href=\"#h-real-world-scenarios-of-sniffing\" data-level=\"3\">Escenarios reales de olfateo<\/a><\/li><li><a href=\"#h-risks-of-sniffed-data\" data-level=\"3\">Riesgos de los datos interceptados<\/a><\/li><li><a href=\"#h-how-to-protect-against-sniffing\" data-level=\"3\">C\u00f3mo protegerse del olfateo<\/a><\/li><li><a href=\"#h-why-sniffing-is-hard-to-detect\" data-level=\"3\">Por qu\u00e9 es dif\u00edcil detectar el olfateo<\/a><\/li><li><a href=\"#h-the-role-of-captcha-in-web-security\" data-level=\"3\">El papel del CAPTCHA en la seguridad web<\/a><\/li><li><a href=\"#h-conclusion\" data-level=\"3\">Conclusi\u00f3n<\/a><\/li><\/ul><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-is-sniffing-in-cybersecurity\">\u00bfQu\u00e9 es el Sniffing en Ciberseguridad?<\/h3>\n\n\n\n<p><strong>Olfateando<\/strong> Se refiere al proceso de monitorizar y capturar paquetes de datos a medida que viajan por una red inform\u00e1tica. Imagine sus datos como si fueran coches en una autopista, cada uno con informaci\u00f3n como correos electr\u00f3nicos, credenciales de inicio de sesi\u00f3n o datos bancarios. Un rastreador act\u00faa como un sistema de vigilancia invisible, capaz de inspeccionar cada veh\u00edculo y registrar su contenido.<\/p>\n\n\n\n<p>Originalmente concebidos como una herramienta de diagn\u00f3stico para administradores de TI, los sniffers se presentan tanto en formato de software como de hardware. Aplicaciones como Wireshark o tcpdump, por ejemplo, se utilizan ampliamente para el an\u00e1lisis leg\u00edtimo de redes. Sin embargo, cuando estas herramientas caen en las manos equivocadas, se convierten en armas poderosas para los ciberdelincuentes. Es importante destacar que <strong>El olfateo no autorizado es ilegal y est\u00e1 penado por la ley.<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-how-sniffing-works\">C\u00f3mo funciona el olfateo<\/h3>\n\n\n\n<p>Cuando los datos viajan a trav\u00e9s de Internet, se descomponen en unidades m\u00e1s peque\u00f1as llamadas <strong>paquetes<\/strong>Estos paquetes normalmente solo son visibles para los dispositivos involucrados en la comunicaci\u00f3n. Sin embargo, un sistema colocado en <strong>modo promiscuo<\/strong> Puede capturar e inspeccionar cada paquete que pasa a trav\u00e9s de una red, independientemente de su destinatario previsto.<\/p>\n\n\n\n<p>As\u00ed es como los rastreadores recopilan datos discretamente. Una vez recopilados, los datos suelen analizarse para obtener informaci\u00f3n confidencial, como credenciales de cuentas, conversaciones privadas o secretos comerciales.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-passive-vs-active-sniffing-attacks\">Ataques de rastreo pasivos vs. activos<\/h3>\n\n\n\n<p>Hay dos enfoques principales para el rastreo: <strong>pasivo<\/strong> y <strong>activo<\/strong>.<\/p>\n\n\n\n<p>En el rastreo pasivo, los atacantes observan la red silenciosamente sin alterar el tr\u00e1fico. Esto es especialmente efectivo en redes antiguas basadas en concentradores, donde todo el tr\u00e1fico se comparte con todos los dispositivos conectados. Al no haber interferencias, el rastreo pasivo es extremadamente dif\u00edcil de detectar.<\/p>\n\n\n\n<p>El rastreo activo, por otro lado, implica manipular la red para acceder a tr\u00e1fico que no es visible de forma natural. Esto podr\u00eda incluir t\u00e9cnicas como <strong>Envenenamiento por ARP<\/strong>, donde un atacante enga\u00f1a a los dispositivos para que env\u00eden datos a trav\u00e9s de ellos, o <strong>Suplantaci\u00f3n de DNS<\/strong>, donde el tr\u00e1fico web se redirige a sitios web falsos. En las redes conmutadas modernas, el rastreo activo es el m\u00e9todo predilecto, ya que los conmutadores a\u00edslan el tr\u00e1fico de datos entre dispositivos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-real-world-scenarios-of-sniffing\">Escenarios reales de olfateo<\/h3>\n\n\n\n<p>Los ataques de rastreo no son nada te\u00f3ricos. En espacios p\u00fablicos como aeropuertos o cafeter\u00edas, los atacantes suelen atacar a usuarios conectados a redes Wi-Fi sin cifrar. Una vez conectados, pueden capturar todo, desde la actividad de navegaci\u00f3n casual hasta las credenciales de inicio de sesi\u00f3n.<\/p>\n\n\n\n<p>En el mundo corporativo, las herramientas de rastreo pueden utilizarse bajo la apariencia de diagn\u00f3sticos inform\u00e1ticos, pero en realidad se utilizan con fines de espionaje. Adem\u00e1s, <strong>Ataques de intermediario (MitM)<\/strong>\u2014una forma com\u00fan de rastreo activo\u2014puede interceptar silenciosamente e incluso modificar datos intercambiados entre dos partes sin su conocimiento.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-risks-of-sniffed-data\">Riesgos de los datos interceptados<\/h3>\n\n\n\n<p>Una vez que los atacantes recopilan los paquetes, pueden reconstruir y explotar la informaci\u00f3n que contienen. Esto puede incluir el robo de nombres de usuario y contrase\u00f1as, el secuestro de sesiones de correo electr\u00f3nico o el acceso no autorizado a los sistemas empresariales. Con suficientes datos, los atacantes pueden suplantar la identidad de usuarios, robar dinero o filtrar documentos confidenciales. En casos avanzados, los rastreadores podr\u00edan incluso inyectar c\u00f3digo malicioso en los paquetes, lo que facilita una mayor vulnerabilidad del sistema.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-how-to-protect-against-sniffing\">C\u00f3mo protegerse del olfateo<\/h3>\n\n\n\n<p>La protecci\u00f3n contra ataques de rastreo comienza con el cifrado. Al visitar sitios web, aseg\u00farese siempre de que la conexi\u00f3n utilice HTTPS, que cifra los datos en tr\u00e1nsito. Para una protecci\u00f3n m\u00e1s completa, especialmente al usar redes p\u00fablicas,... <strong>Red privada virtual (VPN)<\/strong> es esencial, ya que crea un t\u00fanel seguro para sus datos.<\/p>\n\n\n\n<p>Tu red Wi-Fi tambi\u00e9n deber\u00eda utilizar <strong>Cifrado WPA3<\/strong> en lugar de est\u00e1ndares obsoletos como WEP o WPA. Mantener los dispositivos y el software actualizados con los \u00faltimos parches de seguridad reduce las vulnerabilidades explotables. Tambi\u00e9n es recomendable implementar <strong>autenticaci\u00f3n multifactor (MFA)<\/strong>\u2014por lo que incluso si los datos de inicio de sesi\u00f3n se ven comprometidos, el acceso no autorizado sigue siendo poco probable.<\/p>\n\n\n\n<p>Debe contar con software de protecci\u00f3n, como firewalls y antivirus, y tenga cuidado al hacer clic en enlaces o descargar archivos. Las t\u00e1cticas de phishing pueden utilizarse para instalar software esp\u00eda, por lo que unos h\u00e1bitos de navegaci\u00f3n seguros son fundamentales.<\/p>\n\n\n\n<p>Monitorear su red puede proporcionar pistas sobre posibles actividades de rastreo. Las herramientas que detectan dispositivos en modo promiscuo o picos de tr\u00e1fico inusuales son especialmente \u00fatiles en entornos empresariales.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-sniffing-is-hard-to-detect\">Por qu\u00e9 es dif\u00edcil detectar el olfateo<\/h3>\n\n\n\n<p>El rastreo pasivo presenta el mayor desaf\u00edo, ya que no genera actividad de red ni deja registros. Es un observador silencioso. Si bien el rastreo activo a veces puede detectarse debido al tr\u00e1fico anormal que produce, reconocerlo generalmente requiere personal capacitado y herramientas especializadas que puedan distinguir entre patrones normales y sospechosos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-the-role-of-captcha-in-web-security\">El papel del CAPTCHA en la seguridad web<\/h3>\n\n\n\n<p>A pesar de <strong>El olfateo no est\u00e1 directamente relacionado con <a href=\"https:\/\/www.captcha.eu\/scaleline__en-2\/\">Sistemas CAPTCHA<\/a><\/strong>, servicios como <strong><a href=\"http:\/\/captcha.eu\">captcha.eu<\/a><\/strong> Contribuir a iniciativas m\u00e1s amplias de ciberseguridad. El CAPTCHA ayuda a evitar que los bots exploten vulnerabilidades en sitios web, como ataques de inicio de sesi\u00f3n por fuerza bruta o el uso indebido de formularios, lo que podr\u00eda eventualmente resultar en rastreo si un sistema se ve comprometido.<\/p>\n\n\n\n<p>Al bloquear ataques automatizados y verificar que un humano real est\u00e9 interactuando con un sitio web, <a href=\"http:\/\/captcha.eu\"><strong>La soluci\u00f3n f\u00e1cil de usar y centrada en la privacidad de captcha.eu<\/strong> <\/a>act\u00faa como defensa de primera l\u00ednea en una estrategia de seguridad m\u00e1s amplia.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-conclusion\">Conclusi\u00f3n<\/h3>\n\n\n\n<p>El rastreo es una t\u00e9cnica potente en el arsenal del hacker. Puede ocurrir de forma discreta y eficaz, especialmente cuando los usuarios u organizaciones no cuentan con la protecci\u00f3n adecuada. Pero al comprender c\u00f3mo funciona e implementar protecciones s\u00f3lidas, las personas y las empresas pueden anticiparse a los atacantes.<\/p>\n\n\n\n<p>Herramientas de seguridad, cifrado, monitoreo regular y soluciones como <a href=\"http:\/\/captcha.eu\">captcha.eu<\/a> Forme una defensa robusta no solo contra el rastreo, sino tambi\u00e9n contra una serie de amenazas digitales. Y, sobre todo, recuerde: <strong>El olfateo no autorizado no s\u00f3lo es arriesgado, sino tambi\u00e9n ilegal.<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-group has-background-color has-text-color has-background has-link-color wp-elements-f0053231231cbd97b0464e4db5840e87 is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-4b2eccd6 wp-block-group-is-layout-flex\" style=\"border-radius:20px;background-color:#f0faf3\">\n<h2 class=\"wp-block-heading has-foreground-color has-text-color has-link-color has-large-font-size wp-elements-b5699e1a129fe1a30ab792feee8ae242\"><strong>100 solicitudes gratuitas<\/strong><\/h2>\n\n\n\n<p class=\"has-foreground-color has-text-color has-link-color wp-elements-b49cc1b9513f565de22aa575e471cab2\">Tiene la oportunidad de probar y testar nuestro producto con 100 solicitudes gratuitas.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/www.captcha.eu\/dashboard\" style=\"background-color:#77af84\">Iniciar prueba<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-background-color has-text-color has-background has-link-color wp-elements-4bb8247ecf5a95245d0549e230826cba is-vertical is-content-justification-center is-layout-flex wp-container-core-group-is-layout-4b2eccd6 wp-block-group-is-layout-flex\" style=\"border-radius:20px;background-color:#eaf7fe;min-height:370px\">\n<p class=\"has-foreground-color has-text-color has-link-color has-normal-font-size wp-elements-51654aed26531fa155b98ad6415b1916\"><strong>Si tiene alguna pregunta<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-foreground-color has-text-color has-link-color has-large-font-size wp-elements-e59e3a3509d5b3902d206fdd19850087\" id=\"h-contact-us\"><strong>P\u00f3ngase en contacto con nosotros<\/strong><\/h2>\n\n\n\n<p class=\"has-foreground-color has-text-color has-link-color wp-elements-fcf79fe91cb9ca380d018fbc64fff9e1\">Nuestro equipo de asistencia est\u00e1 a su disposici\u00f3n para ayudarle.<br><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-foreground-color has-text-color has-background wp-element-button\" href=\"javascript:goToContact();\" style=\"background-color:#81bfe7\">P\u00f3ngase en contacto con nosotros<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u00bfSe ha imaginado alguna vez a alguien escuchando en silencio sus conversaciones en l\u00ednea o su actividad digital? En el mundo digital, este tipo de escucha no s\u00f3lo es posible, sino que es una amenaza conocida. La t\u00e9cnica se llama sniffing, y es uno de los m\u00e9todos m\u00e1s comunes utilizados para interceptar datos a trav\u00e9s de una red. A medida que las ciberamenazas...<\/p>","protected":false},"author":1,"featured_media":1983,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","footnotes":""},"categories":[41],"tags":[],"class_list":["post-1982","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-base"],"acf":{"pretitle":"","intern_slug":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v24.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Sniffing? \u00bb Detect &amp; Prevent Data Theft Online<\/title>\n<meta name=\"description\" content=\"What is sniffing in cybersecurity? \u279c Data theft risks \u2713 Passive &amp; active attacks \u2713 Learn how to detect and prevent sniffing!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/new.captcha.eu\/es\/que-es-olfatear\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Sniffing?\" \/>\n<meta property=\"og:description\" content=\"What is sniffing in cybersecurity? \u279c Data theft risks \u2713 Passive &amp; active attacks \u2713 Learn how to detect and prevent sniffing!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/new.captcha.eu\/es\/que-es-olfatear\/\" \/>\n<meta property=\"og:site_name\" content=\"captcha.eu\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-24T18:44:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-30T09:39:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Captcha\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@captcha_eu\" \/>\n<meta name=\"twitter:site\" content=\"@captcha_eu\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Captcha\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/\"},\"author\":{\"name\":\"Captcha\",\"@id\":\"https:\/\/new.captcha.eu\/#\/schema\/person\/f1e4886cdd0c5bbbb44279dd0d95445a\"},\"headline\":\"What is Sniffing?\",\"datePublished\":\"2025-04-24T18:44:21+00:00\",\"dateModified\":\"2025-04-30T09:39:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/\"},\"wordCount\":992,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/new.captcha.eu\/#organization\"},\"image\":{\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png\",\"articleSection\":[\"Knowledge Base\"],\"inLanguage\":\"es-ES\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#respond\"]}],\"accessibilityFeature\":[\"tableOfContents\"]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/\",\"url\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/\",\"name\":\"What is Sniffing? \u00bb Detect & Prevent Data Theft Online\",\"isPartOf\":{\"@id\":\"https:\/\/new.captcha.eu\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png\",\"datePublished\":\"2025-04-24T18:44:21+00:00\",\"dateModified\":\"2025-04-30T09:39:28+00:00\",\"description\":\"What is sniffing in cybersecurity? \u279c Data theft risks \u2713 Passive & active attacks \u2713 Learn how to detect and prevent sniffing!\",\"breadcrumb\":{\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#breadcrumb\"},\"inLanguage\":\"es-ES\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage\",\"url\":\"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png\",\"contentUrl\":\"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png\",\"width\":1920,\"height\":1080,\"caption\":\"Image generated by AI\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/new.captcha.eu\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is Sniffing?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/new.captcha.eu\/#website\",\"url\":\"https:\/\/new.captcha.eu\/\",\"name\":\"captcha.eu\",\"description\":\"The GDPR-compliant message protection | captcha.eu\",\"publisher\":{\"@id\":\"https:\/\/new.captcha.eu\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/new.captcha.eu\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es-ES\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/new.captcha.eu\/#organization\",\"name\":\"captcha.eu\",\"url\":\"https:\/\/new.captcha.eu\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/new.captcha.eu\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.captcha.eu\/wp-content\/uploads\/2024\/02\/Captcha_mono-C_Logo.svg\",\"contentUrl\":\"https:\/\/www.captcha.eu\/wp-content\/uploads\/2024\/02\/Captcha_mono-C_Logo.svg\",\"width\":24,\"height\":28,\"caption\":\"captcha.eu\"},\"image\":{\"@id\":\"https:\/\/new.captcha.eu\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/x.com\/captcha_eu\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/new.captcha.eu\/#\/schema\/person\/f1e4886cdd0c5bbbb44279dd0d95445a\",\"name\":\"Captcha\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es-ES\",\"@id\":\"https:\/\/new.captcha.eu\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/48b669a092d552f5f30202f8da848c93fa4c54f8c2b3167568ed5cbccbe4994a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/48b669a092d552f5f30202f8da848c93fa4c54f8c2b3167568ed5cbccbe4994a?s=96&d=mm&r=g\",\"caption\":\"Captcha\"},\"sameAs\":[\"https:\/\/www.captcha.eu\"],\"url\":\"https:\/\/new.captcha.eu\/es\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"What is Sniffing? \u00bb Detect & Prevent Data Theft Online","description":"What is sniffing in cybersecurity? \u279c Data theft risks \u2713 Passive & active attacks \u2713 Learn how to detect and prevent sniffing!","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/new.captcha.eu\/es\/que-es-olfatear\/","og_locale":"es_ES","og_type":"article","og_title":"What is Sniffing?","og_description":"What is sniffing in cybersecurity? \u279c Data theft risks \u2713 Passive & active attacks \u2713 Learn how to detect and prevent sniffing!","og_url":"https:\/\/new.captcha.eu\/es\/que-es-olfatear\/","og_site_name":"captcha.eu","article_published_time":"2025-04-24T18:44:21+00:00","article_modified_time":"2025-04-30T09:39:28+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png","type":"image\/png"}],"author":"Captcha","twitter_card":"summary_large_image","twitter_creator":"@captcha_eu","twitter_site":"@captcha_eu","twitter_misc":{"Written by":"Captcha","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#article","isPartOf":{"@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/"},"author":{"name":"Captcha","@id":"https:\/\/new.captcha.eu\/#\/schema\/person\/f1e4886cdd0c5bbbb44279dd0d95445a"},"headline":"What is Sniffing?","datePublished":"2025-04-24T18:44:21+00:00","dateModified":"2025-04-30T09:39:28+00:00","mainEntityOfPage":{"@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/"},"wordCount":992,"commentCount":0,"publisher":{"@id":"https:\/\/new.captcha.eu\/#organization"},"image":{"@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage"},"thumbnailUrl":"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png","articleSection":["Knowledge Base"],"inLanguage":"es-ES","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#respond"]}],"accessibilityFeature":["tableOfContents"]},{"@type":"WebPage","@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/","url":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/","name":"What is Sniffing? \u00bb Detect & Prevent Data Theft Online","isPartOf":{"@id":"https:\/\/new.captcha.eu\/#website"},"primaryImageOfPage":{"@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage"},"image":{"@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage"},"thumbnailUrl":"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png","datePublished":"2025-04-24T18:44:21+00:00","dateModified":"2025-04-30T09:39:28+00:00","description":"What is sniffing in cybersecurity? \u279c Data theft risks \u2713 Passive & active attacks \u2713 Learn how to detect and prevent sniffing!","breadcrumb":{"@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#breadcrumb"},"inLanguage":"es-ES","potentialAction":[{"@type":"ReadAction","target":["https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/"]}]},{"@type":"ImageObject","inLanguage":"es-ES","@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#primaryimage","url":"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png","contentUrl":"https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png","width":1920,"height":1080,"caption":"Image generated by AI"},{"@type":"BreadcrumbList","@id":"https:\/\/new.captcha.eu\/de\/was-ist-schnuffeln\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/new.captcha.eu\/"},{"@type":"ListItem","position":2,"name":"What is Sniffing?"}]},{"@type":"WebSite","@id":"https:\/\/new.captcha.eu\/#website","url":"https:\/\/new.captcha.eu\/","name":"captcha.eu","description":"The GDPR-compliant message protection | captcha.eu","publisher":{"@id":"https:\/\/new.captcha.eu\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/new.captcha.eu\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es-ES"},{"@type":"Organization","@id":"https:\/\/new.captcha.eu\/#organization","name":"captcha.eu","url":"https:\/\/new.captcha.eu\/","logo":{"@type":"ImageObject","inLanguage":"es-ES","@id":"https:\/\/new.captcha.eu\/#\/schema\/logo\/image\/","url":"https:\/\/www.captcha.eu\/wp-content\/uploads\/2024\/02\/Captcha_mono-C_Logo.svg","contentUrl":"https:\/\/www.captcha.eu\/wp-content\/uploads\/2024\/02\/Captcha_mono-C_Logo.svg","width":24,"height":28,"caption":"captcha.eu"},"image":{"@id":"https:\/\/new.captcha.eu\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/x.com\/captcha_eu"]},{"@type":"Person","@id":"https:\/\/new.captcha.eu\/#\/schema\/person\/f1e4886cdd0c5bbbb44279dd0d95445a","name":"Captcha","image":{"@type":"ImageObject","inLanguage":"es-ES","@id":"https:\/\/new.captcha.eu\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/48b669a092d552f5f30202f8da848c93fa4c54f8c2b3167568ed5cbccbe4994a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/48b669a092d552f5f30202f8da848c93fa4c54f8c2b3167568ed5cbccbe4994a?s=96&d=mm&r=g","caption":"Captcha"},"sameAs":["https:\/\/www.captcha.eu"],"url":"https:\/\/new.captcha.eu\/es\/author\/admin\/"}]}},"pbg_featured_image_src":{"full":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",1920,1080,false],"thumbnail":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-150x150.png",150,150,true],"medium":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-300x169.png",300,169,true],"medium_large":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-768x432.png",768,432,true],"large":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-1024x576.png",1024,576,true],"saasland_370x300":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_85x70":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",85,48,false],"saasland_228x405":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",228,128,false],"saasland_370x280":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_370x700":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_370x190":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",338,190,false],"saasland_80x80":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",80,45,false],"saasland_70x70":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",70,39,false],"saasland_83x88":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",83,47,false],"saasland_100x100":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",100,56,false],"saasland_85x90":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",85,48,false],"saasland_960x500":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",889,500,false],"saasland_370x400":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_270x350":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",270,152,false],"saasland_570x400":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",570,321,false],"saasland_640x450":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",640,360,false],"saasland_480x450":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",480,270,false],"saasland_240x220":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",240,135,false],"saasland_240x250":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",240,135,false],"saasland_450x420":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",450,253,false],"saasland_80x90":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",80,45,false],"saasland_350x360":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",350,197,false],"saasland_350x400":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",350,197,false],"saasland_370x440":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_560x400":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",560,315,false],"saasland_370x320":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_250x320":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_270x330":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",270,152,false],"saasland_700x480":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",700,394,false],"saasland_370x480":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_1170x675":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",1170,658,false],"saasland_370x418":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_480x480":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",480,270,false],"saasland_634x480":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",634,357,false],"saasland_960x670":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",960,540,false],"saasland_470x520":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",470,264,false],"saasland_670x670":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",670,377,false],"saasland_370x370":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_170x120":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",170,96,false],"saasland_285x350":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",285,160,false],"1536x1536":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-1536x864.png",1536,864,true],"2048x2048":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",1920,1080,false],"trp-custom-language-flag":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18-18x10.png",18,10,true],"saasland_370x360":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_770x480":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",770,433,false],"saasland_570x340":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",570,321,false],"saasland_110x80":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",110,62,false],"saasland_800x400":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",711,400,false],"saasland_455x600":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",455,256,false],"saasland_520x300":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",520,293,false],"saasland_75x75":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",75,42,false],"saasland_240x200":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",240,135,false],"saasland_370x350":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",370,208,false],"saasland_350x365":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",350,197,false],"saasland_670x450":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",670,377,false],"saasland_1170x600":["https:\/\/new.captcha.eu\/wp-content\/uploads\/2025\/04\/Design-ohne-Titel18.png",1067,600,false]},"pbg_author_info":{"display_name":"Captcha","author_link":"https:\/\/new.captcha.eu\/es\/author\/admin\/","author_img":"<img alt='Captcha' src='https:\/\/secure.gravatar.com\/avatar\/48b669a092d552f5f30202f8da848c93fa4c54f8c2b3167568ed5cbccbe4994a?s=128&#038;d=mm&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/48b669a092d552f5f30202f8da848c93fa4c54f8c2b3167568ed5cbccbe4994a?s=256&#038;d=mm&#038;r=g 2x' class='avatar avatar-128 photo' height='128' width='128' decoding='async'\/>"},"pbg_comment_info":" No Comments","pbg_excerpt":"Have you ever imagined someone silently listening to your online conversations or digital activity? In the digital world, this type of eavesdropping is not only possible \u2014 it\u2019s a known threat. The technique is called sniffing, and it\u2019s one of the most common methods used to intercept data over a network. As cyber threats become...","_links":{"self":[{"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/posts\/1982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/comments?post=1982"}],"version-history":[{"count":2,"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/posts\/1982\/revisions"}],"predecessor-version":[{"id":2186,"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/posts\/1982\/revisions\/2186"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/media\/1983"}],"wp:attachment":[{"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/media?parent=1982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/categories?post=1982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/new.captcha.eu\/es\/wp-json\/wp\/v2\/tags?post=1982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}