{"id":20957,"date":"2024-04-27T08:00:25","date_gmt":"2024-04-27T08:00:25","guid":{"rendered":"https:\/\/heylocate.mobi\/pt\/?post_type=termin&#038;p=20957"},"modified":"2026-03-27T10:40:37","modified_gmt":"2026-03-27T10:40:37","slug":"2fa","status":"publish","type":"termin","link":"https:\/\/heylocate.mobi\/pt\/termin\/2fa\/","title":{"rendered":"Autentica\u00e7\u00e3o de Dois Fatores (2FA)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"O-que-exatamente-\u00e9-o-2FA\">O que \u00e9 o 2FA?<\/h2>\n\n\n\n<p>A autentica\u00e7\u00e3o de dois fatores (2FA) \u00e9 uma medida de seguran\u00e7a que acrescenta outra camada de prote\u00e7\u00e3o \u00e0s contas on-line, aumentando a seguran\u00e7a ao exigir dois fatores de autentica\u00e7\u00e3o diferentes para o acesso.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1920\" height=\"1240\" src=\"https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/categorias-de-autenticacao-multifatorial.jpg\" alt=\"Diagrama mostrando os fatores de autentica\u00e7\u00e3o: algo que o usu\u00e1rio tem; algo que o usu\u00e1rio sabe; e algo que o usu\u00e1rio \u00e9, indicado pela biometria. Ap\u00f3s a autentica\u00e7\u00e3o - acesso concedido\" class=\"wp-image-20958\" srcset=\"https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/categorias-de-autenticacao-multifatorial.jpg 1920w, https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/categorias-de-autenticacao-multifatorial-300x194.jpg 300w, https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/categorias-de-autenticacao-multifatorial-1548x1000.jpg 1548w, https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/categorias-de-autenticacao-multifatorial-768x496.jpg 768w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Ilustra\u00e7\u00e3o dos tr\u00eas tipos fundamentais de autentica\u00e7\u00e3o multifatorial<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Tipos-de-Fatores-de-Autentica\u00e7\u00e3o\">Tipos de Fatores de Autentica\u00e7\u00e3o<\/h3>\n\n\n\n<p>Para entender o 2FA, \u00e9 essencial explorar os tr\u00eas principais tipos de fatores de autentica\u00e7\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Algo que voc\u00ea tem: <\/strong>Refere-se a qualquer item f\u00edsico possu\u00eddo pelo usu\u00e1rio, como um cart\u00e3o especial, um token de seguran\u00e7a ou um smartphone. Esses itens geram c\u00f3digos exclusivos exigidos juntamente com a senha para acesso.<\/li>\n\n\n\n<li><strong>Algo que voc\u00ea sabe:<\/strong> Esse fator de autentica\u00e7\u00e3o envolve informa\u00e7\u00f5es conhecidas apenas pelo usu\u00e1rio, como senhas, PINs ou frases secretas.<\/li>\n\n\n\n<li><strong>Algo que voc\u00ea \u00e9:<\/strong> A autentica\u00e7\u00e3o biom\u00e9trica se baseia em caracter\u00edsticas f\u00edsicas exclusivas, como impress\u00f5es digitais, caracter\u00edsticas faciais, padr\u00f5es oculares ou reconhecimento de voz.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Exemplos-de-Autentica\u00e7\u00e3o-de-Dois-Fatores\">Exemplos de Autentica\u00e7\u00e3o de Dois Fatores<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Saques em caixas eletr\u00f4nicos: <\/strong>Requer um cart\u00e3o banc\u00e1rio (posse) e um PIN (conhecimento) para acesso.<\/li>\n\n\n\n<li><strong>Banco on-line: <\/strong>Geralmente emprega a 2FA combinando um nome de usu\u00e1rio\/senha (conhecimento) com uma etapa adicional, como inserir uma senha de uso \u00fanico (OTP) enviada para um dispositivo m\u00f3vel (posse).<\/li>\n<\/ul>\n\n\n\n<section id=\"section-generated-banner-block_e2816a32ded0346ac00d24cf2b7f51a8\"\n         class=\"section block-section-generated-banner\">\n    <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3100229280663156\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- Responsive Display Ad TPN -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:flex;justify-content: center;\"\r\n     data-ad-client=\"ca-pub-3100229280663156\"\r\n     data-ad-slot=\"3891667990\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/section>\n\n\n<h3 class=\"wp-block-heading\">Senhas e frases-senha<\/h3>\n\n\n\n<p>S\u00e3o combina\u00e7\u00f5es de caracteres usadas para proteger contas on-line. As senhas fortes incluem uma combina\u00e7\u00e3o de letras mai\u00fasculas e min\u00fasculas, n\u00fameros e caracteres especiais. As frases-senha, mais longas e f\u00e1ceis de lembrar, oferecem seguran\u00e7a robusta.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PINs e outras informa\u00e7\u00f5es secretas<\/h3>\n\n\n\n<p>Os PINs s\u00e3o c\u00f3digos num\u00e9ricos usados junto com cart\u00f5es f\u00edsicos ou tokens para aumentar a seguran\u00e7a. As chaves de desbloqueio pessoal (PUKs) s\u00e3o utilizadas para desbloquear <a href=\"https:\/\/heylocate.mobi\/pt\/termin\/cartao-sim\/\" target=\"_blank\" rel=\"noreferrer noopener\">cart\u00f5es SIM<\/a> em dispositivos m\u00f3veis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tokens f\u00edsicos<\/h3>\n\n\n\n<p>Esses objetos tang\u00edveis, como o token RSA SecurID, geram c\u00f3digos para autentica\u00e7\u00e3o, aumentando a seguran\u00e7a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tokens de software<\/h3>\n\n\n\n<p>Os tokens de software, como aplicativos m\u00f3veis que geram senhas de uso \u00fanico (OTPs), fornecem 2FA sem a necessidade de dispositivos f\u00edsicos.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1920\" height=\"1240\" src=\"https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/metodos-de-autenticacao-de-dois-fatores.jpg\" alt=\"Gr\u00e1fico ilustrando v\u00e1rios m\u00e9todos de autentica\u00e7\u00e3o de dois fatores, incluindo senhas\/frases-passe, tokens f\u00edsicos, PINs\/PUKs e tokens de software\" class=\"wp-image-20959\" srcset=\"https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/metodos-de-autenticacao-de-dois-fatores.jpg 1920w, https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/metodos-de-autenticacao-de-dois-fatores-300x194.jpg 300w, https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/metodos-de-autenticacao-de-dois-fatores-1548x1000.jpg 1548w, https:\/\/heylocate.mobi\/pt\/wp-content\/uploads\/sites\/3\/2024\/03\/metodos-de-autenticacao-de-dois-fatores-768x496.jpg 768w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Infogr\u00e1fico dos m\u00e9todos comuns de autentica\u00e7\u00e3o de dois fatores usados para fortalecer a seguran\u00e7a digital<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Riscos e pontos fracos<\/h3>\n\n\n\n<p>Embora a 2FA melhore a seguran\u00e7a, os riscos incluem ataques de engenharia social e intercepta\u00e7\u00e3o dos canais de comunica\u00e7\u00e3o usados para autentica\u00e7\u00e3o.<\/p>\n\n\n\n<section id=\"section-generated-banner-block_e2816a32ded0346ac00d24cf2b7f51a8\"\n         class=\"section block-section-generated-banner\">\n    <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3100229280663156\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- Responsive Display Ad TPN -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:flex;justify-content: center;\"\r\n     data-ad-client=\"ca-pub-3100229280663156\"\r\n     data-ad-slot=\"3891667990\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/section>\n\n\n<h3 class=\"wp-block-heading\">Regulamenta\u00e7\u00f5es globais<\/h3>\n\n\n\n<p>As autoridades imp\u00f5em a autentica\u00e7\u00e3o multifator (MFA) para proteger os dados pessoais, exemplificada por regulamenta\u00e7\u00f5es como o GDPR da UE e o PCI DSS (Payment Card Industry Data Security Standard).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Desafios de implementa\u00e7\u00e3o<\/h3>\n\n\n\n<p>A implementa\u00e7\u00e3o da MFA exige o gerenciamento de usu\u00e1rios, a integra\u00e7\u00e3o com os sistemas existentes e a supera\u00e7\u00e3o da resist\u00eancia por meio de educa\u00e7\u00e3o e persuas\u00e3o.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"Frequently-Asked-Questions\">Perguntas frequentes<\/h2>\n\n\n\n<p>Existem perguntas que as pessoas fazem sobre 2FA.<\/p>\n\n\n\n<div id=\"block-question-answerblock_250d8d2663608388f8fec591e8e721fa\" class=\"termin-question-answer\">\n\t<h3>Como obtenho meu 2FA?<\/h3><p>Ative nas configura\u00e7\u00f5es de seguran\u00e7a da sua conta. A maioria das plataformas oferece 2FA via SMS, e-mail ou aplicativos autenticadores como Google Authenticator ou Microsoft Authenticator. De acordo com os padr\u00f5es atuais de 2026, voc\u00ea escaneia um c\u00f3digo QR ou vincula seu telefone para gerar c\u00f3digos de verifica\u00e7\u00e3o.<\/p>\n<\/div>\n\n\n\n\n<div id=\"block-question-answerblock_9c1b33cf39a700324a969bc54d58ac94\" class=\"termin-question-answer\">\n\t<h3>O 2FA \u00e9 bom ou ruim?<\/h3><p>O 2FA \u00e9 bom. Ele adiciona uma camada extra de seguran\u00e7a al\u00e9m da sua senha. Mesmo que sua senha seja roubada, invasores n\u00e3o poder\u00e3o acessar sua conta sem o segundo fator.<\/p>\n<\/div>\n\n\n\n\n<div id=\"block-question-answerblock_0648d8d4ac39b874029d3b48eab8a621\" class=\"termin-question-answer\">\n\t<h3>Qual \u00e9 um exemplo de 2FA?<\/h3><p>Uma senha + c\u00f3digo de uso \u00fanico \u00e9 um exemplo comum. Ap\u00f3s inserir sua senha, voc\u00ea recebe um c\u00f3digo tempor\u00e1rio via SMS ou em um aplicativo autenticador. Ambos os fatores devem estar corretos para fazer login.<\/p>\n<\/div>\n\n\n\n\n<div id=\"block-question-answerblock_b9ba4bfc4dc7dbd11b4fe97cc73fe3be\" class=\"termin-question-answer\">\n\t<h3>Como saber se o 2FA est\u00e1 ativado?<\/h3><p>Verifique as configura\u00e7\u00f5es de seguran\u00e7a da sua conta. A maioria dos servi\u00e7os mostra \u201c2FA ativado\u201d ou \u201cverifica\u00e7\u00e3o em duas etapas ativa\u201d. Voc\u00ea tamb\u00e9m pode ser solicitado a inserir um c\u00f3digo ao fazer login.<\/p>\n<\/div>\n\n\n\n\n<div id=\"block-question-answerblock_2a7934b80b65bddccc696d50bdbe2695\" class=\"termin-question-answer\">\n\t<h3>O 2FA ainda pode ser hackeado?<\/h3><p>Sim, mas \u00e9 mais dif\u00edcil. De acordo com as pr\u00e1ticas atuais de ciberseguran\u00e7a, m\u00e9todos como phishing ou troca de SIM (SIM swapping) podem contornar formas mais fracas de 2FA (por exemplo, SMS). O 2FA baseado em aplicativos ou hardware reduz significativamente esse risco.<\/p>\n<\/div>\n\n\n\n\n<div id=\"block-question-answerblock_c1ee24f8a6fc8e940989cf309013c6a9\" class=\"termin-question-answer\">\n\t<h3>Qual 2FA \u00e9 o mais seguro?<\/h3><p>Chaves de seguran\u00e7a f\u00edsicas s\u00e3o as mais seguras. Dispositivos como YubiKey usam autentica\u00e7\u00e3o f\u00edsica e s\u00e3o resistentes a phishing. Autenticadores baseados em aplicativos s\u00e3o considerados mais seguros do que SMS.<\/p>\n<\/div>\n\n\n\n\n<div id=\"block-question-answerblock_f8714196c1102b446f6d1e19b978d14a\" class=\"termin-question-answer\">\n\t<h3>Como o 2FA funciona se eu perder meu telefone?<\/h3><p>Voc\u00ea pode usar c\u00f3digos de backup ou m\u00e9todos de recupera\u00e7\u00e3o. A maioria dos servi\u00e7os fornece c\u00f3digos de backup de uso \u00fanico ou permite login via e-mail ou verifica\u00e7\u00e3o de identidade. Sem isso, a recupera\u00e7\u00e3o da conta depende do processo de suporte da plataforma.<\/p>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Refer\u00eancias\">Refer\u00eancias<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Russell, S. (2023). &#8220;<a href=\"https:\/\/doi.org\/10.1093\/combul\/bwad023\" target=\"_blank\" rel=\"noreferrer noopener\">Bypassing Multi-Factor Authentication<\/a>\u201d. ITNOW, 65(1), 42\u201345.<\/li>\n\n\n\n<li>Jindal, S., &amp; Misra, M. (2021). &#8220;<a href=\"https:\/\/doi.org\/10.1007\/978-981-15-5341-7_60\" target=\"_blank\" rel=\"noreferrer noopener\">Multi-factor Authentication Scheme Using Mobile App and Camera<\/a>\u201d.<\/li>\n\n\n\n<li>In G. S. Hura, A. K. Singh, &amp; L. S. Hoe (Eds.), <a href=\"https:\/\/link.springer.com\/book\/10.1007\/978-981-15-5341-7\" target=\"_blank\" rel=\"noreferrer noopener\">Advances in Communication and Computational Technology<\/a> (pp. 787\u2013813). Springer.<\/li>\n\n\n\n<li>&#8220;<a href=\"https:\/\/www.cnet.com\/news\/privacy\/two-factor-authentication-what-you-need-to-know-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\">Two-factor authentication: What you need to know (FAQ)<\/a>\u201d \u2013 CNET. (2015). CNET. Retrieved October 31, 2015.<\/li>\n\n\n\n<li>Jacomme, C., &amp; Kremer, S. (2021). &#8220;<a href=\"https:\/\/doi.org\/10.1145\/3440712\" target=\"_blank\" rel=\"noreferrer noopener\">An Extensive Formal Analysis of Multi-factor Authentication Protocols<\/a>\u201d. ACM Transactions on Privacy and Security, 24(2), 1\u201334.<\/li>\n\n\n\n<li>Boeckl, K. (2016). &#8220;<a href=\"https:\/\/www.nist.gov\/itl\/applied-cybersecurity\/back-basics-multi-factor-authentication-mfa\" target=\"_blank\" rel=\"noreferrer noopener\">Back to basics: Multi-factor authentication (MFA)<\/a>\u201d. NIST. Retrieved April 6, 2021.<\/li>\n\n\n\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Multi-factor_authentication\" target=\"_blank\" rel=\"noreferrer noopener\">Multi-factor authentication &#8211; Wikipedia<\/a>.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>O que \u00e9 o 2FA? A autentica\u00e7\u00e3o de dois fatores (2FA) \u00e9 uma medida de seguran\u00e7a que acrescenta outra camada de prote\u00e7\u00e3o \u00e0s contas on-line, aumentando a seguran\u00e7a ao exigir dois fatores de autentica\u00e7\u00e3o diferentes para o acesso. Tipos de&#8230;<\/p>\n","protected":false},"featured_media":0,"parent":0,"menu_order":0,"template":"","class_list":["post-20957","termin","type-termin","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 o 2FA?<\/title>\n<meta name=\"description\" content=\"Defini\u00e7\u00e3o, significado e explica\u00e7\u00e3o de 2FA. 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