{"id":155802,"date":"2024-10-09T08:42:14","date_gmt":"2024-10-09T15:42:14","guid":{"rendered":"https:\/\/blog.everpuredata.com\/?p=155802"},"modified":"2025-02-13T21:08:28","modified_gmt":"2025-02-14T05:08:28","slug":"mfa-vs-2fa-whats-the-difference","status":"publish","type":"post","link":"https:\/\/blog.everpuredata.com\/pt-br\/purely-educational\/mfa-vs-2fa-whats-the-difference\/","title":{"rendered":"MFA vs. 2FA: qual \u00e9 a diferen\u00e7a?\u00a0"},"content":{"rendered":"\n
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Resumo<\/h3>\n\n\n\n

Multi-factor authentication (MFA) and two-factor authentication (2FA) are account login processes that add extra layers of security to protect users\u2019 and customers\u2019 accounts from unauthorized access.\u00a0<\/p>\n<\/div>\n\n\n\n

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Uma senha por si s\u00f3 n\u00e3o \u00e9 suficiente para proteger suas contas de usu\u00e1rio. Depois de divulgada, uma senha d\u00e1 acesso total \u00e0s suas informa\u00e7\u00f5es confidenciais. A autentica\u00e7\u00e3o multifator (MFA) e a autentica\u00e7\u00e3o de dois fatores (2FA) adicionam uma camada de seguran\u00e7a ao acesso \u00e0 conta.\u00a0<\/p>\n\n\n\n

Se um hacker acessar sua senha, ele n\u00e3o conseguir\u00e1 autenticar sua conta at\u00e9 que a segunda fase de autentica\u00e7\u00e3o seja conclu\u00edda. Normalmente, esse \u00e9 um c\u00f3digo enviado para seu telefone ou e-mail, mas a MFA e a 2FA trabalham com biometria, controles de toque e verifica\u00e7\u00e3o usando aplicativos secund\u00e1rios.<\/p>\n\n\n\n

O que \u00e9 2FA?<\/h2>\n\n\n\n

A autentica\u00e7\u00e3o de dois fatores (2FA, Two-factor Authentication) adiciona uma \u00fanica camada de seguran\u00e7a<\/a> a uma conta. O \u201c2\u201d no 2FA \u00e9 a segunda etapa no processo de autentica\u00e7\u00e3o. Normalmente, o 2FA \u00e9 simples para os usu\u00e1rios e funciona com smartphones ou mensagens de e-mail. A forma mais popular de 2FA \u00e9 um c\u00f3digo enviado em uma mensagem de texto para o smartphone do usu\u00e1rio. Os usu\u00e1rios inserem o c\u00f3digo no aplicativo para finalizar o processo de autentica\u00e7\u00e3o. Sem ela, uma senha n\u00e3o \u00e9 suficiente para acessar uma conta.<\/p>\n\n\n\n

Um bom exemplo de 2FA \u00e9 acessar sua conta banc\u00e1ria. Muitas vezes, o banco pede sua senha, mas voc\u00ea deve inserir um c\u00f3digo de uma mensagem de texto enviada para seu n\u00famero de telefone. O n\u00famero de telefone \u00e9 o n\u00famero que voc\u00ea digitou quando abriu a conta banc\u00e1ria. Alterar o n\u00famero de telefone 2FA frequentemente requer verifica\u00e7\u00e3o usando um c\u00f3digo enviado para o n\u00famero de telefone original ou um m\u00e9todo secund\u00e1rio 2FA, como e-mail.<\/p>\n\n\n\n

O que \u00e9 MFA?<\/h2>\n\n\n\n

A autentica\u00e7\u00e3o de v\u00e1rios fatores funciona de forma semelhante ao 2FA, mas muitas vezes usa uma forma alternativa de verifica\u00e7\u00e3o secund\u00e1ria. Na verdade, o 2FA \u00e9 uma forma de MFA, mas a MFA pode exigir v\u00e1rias etapas para autenticar um aplicativo. Por exemplo, a MFA pode exigir uma senha, um c\u00f3digo secund\u00e1rio enviado em uma mensagem de texto e uma etapa biom\u00e9trica.<\/p>\n\n\n\n

Duas formas comuns de MFA s\u00e3o impress\u00e3o digital e reconhecimento facial. A maioria dos smartphones funciona com reconhecimento facial ou impress\u00e3o digital para acessar o dispositivo, mas ainda exige apenas um \u00fanico m\u00e9todo de autentica\u00e7\u00e3o. Os bancos frequentemente usam biometria para uma etapa secund\u00e1ria de autentica\u00e7\u00e3o quando voc\u00ea acessa contas no local f\u00edsico do banco. Voc\u00ea leva seu cart\u00e3o de d\u00e9bito para verificar sua identidade, e a leitura da impress\u00e3o digital garante que voc\u00ea seja o verdadeiro titular do cart\u00e3o.<\/p>\n\n\n\n

Principais diferen\u00e7as entre MFA e 2FA<\/h2>\n\n\n\n

A 2FA \u00e9 uma forma de autentica\u00e7\u00e3o multifator, mas, como o nome sugere, a 2FA requer apenas duas etapas para que um usu\u00e1rio acesse sua conta. A primeira forma de verifica\u00e7\u00e3o \u00e9 sua senha, que verifica sua identidade validando um c\u00f3digo alfanum\u00e9rico que s\u00f3 voc\u00ea deve saber. Normalmente, a segunda forma de autentica\u00e7\u00e3o no 2FA \u00e9 um c\u00f3digo enviado a um smartphone que representa que voc\u00ea possui o dispositivo em arquivo. O c\u00f3digo da mensagem de texto valida que voc\u00ea tem o smartphone em arquivo.<\/p>\n\n\n\n

Em todos os tipos de MFA, a primeira etapa \u00e9 geralmente uma senha. A senha representa algo que s\u00f3 voc\u00ea deve saber. A segunda etapa \u00e9 verificar se voc\u00ea tem o smartphone em arquivo e a terceira etapa \u00e9 normalmente biom\u00e9trica. A biometria \u00e9 exclusiva e valida que voc\u00ea \u00e9 geneticamente a pessoa que acessa a conta.<\/p>\n\n\n\n

A \u00fanica diferen\u00e7a principal entre 2FA e MFA \u00e9 que a MFA pode exigir v\u00e1rias etapas para acessar uma conta, enquanto a 2FA exige apenas duas. Mais etapas para autentica\u00e7\u00e3o tornam muito mais dif\u00edcil para um invasor acessar uma conta. A MFA com v\u00e1rias etapas \u00e9 mais segura, mas tamb\u00e9m aumenta a chance de os usu\u00e1rios serem bloqueados de uma conta se apenas um m\u00e9todo n\u00e3o estiver dispon\u00edvel para o usu\u00e1rio.<\/p>\n\n\n\n

Benef\u00edcios de usar MFA em rela\u00e7\u00e3o a 2FA<\/h2>\n\n\n\n

Para cada etapa da autentica\u00e7\u00e3o, uma camada adicional de seguran\u00e7a reduz o risco de comprometimento de uma conta<\/a>. Por exemplo, com o 2FA, os invasores podem ligar para um usu\u00e1rio alvo e convenc\u00ea-lo a divulgar o c\u00f3digo em seu smartphone. M\u00e9todos alternativos usando autenticadores de aplicativos de smartphone tamb\u00e9m s\u00e3o usados, mas oferecem o mesmo n\u00edvel de prote\u00e7\u00e3o que uma mensagem de texto. Ambas as etapas secund\u00e1rias de autentica\u00e7\u00e3o podem ser comprometidas.<\/p>\n\n\n\n

Com a MFA, um invasor n\u00e3o conseguiria imitar a biometria necess\u00e1ria para a terceira etapa da autentica\u00e7\u00e3o. A MFA \u00e9 uma adi\u00e7\u00e3o mais segura \u00e0 seguran\u00e7a da conta, mas tamb\u00e9m \u00e9 mais cara para as organiza\u00e7\u00f5es darem suporte. Ela exige mais hardware, a equipe para dar suporte a ela e a infraestrutura para garantir que ela seja monitorada.<\/p>\n\n\n\n

Quando usar 2FA vs. MFA<\/h2>\n\n\n\n

Para a maioria dos aplicativos, o 2FA \u00e9 suficiente. \u00c9 comum que bancos, com\u00e9rcio eletr\u00f4nico e outros aplicativos online trabalhem com um servi\u00e7o de mensagens de texto para enviar um c\u00f3digo secund\u00e1rio para smartphones de clientes. Algumas organiza\u00e7\u00f5es oferecem uma alternativa a uma mensagem de texto de smartphone para usu\u00e1rios sem um dispositivo. Um c\u00f3digo pode ser enviado para o endere\u00e7o de e-mail do usu\u00e1rio.<\/p>\n\n\n\n

A MFA \u00e9 ben\u00e9fica para contas de usu\u00e1rio com acesso a informa\u00e7\u00f5es altamente confidenciais. Por exemplo, aplicativos do governo podem exigir um processo de MFA. Funcion\u00e1rios internos com acesso a dados financeiros podem precisar de uma terceira etapa de autentica\u00e7\u00e3o para acessar sua conta. Qualquer aplicativo com dados altamente confidenciais deve estar por tr\u00e1s da MFA.<\/p>\n\n\n\n

Conclus\u00e3o<\/h2>\n\n\n\n

Proteger os dados deve sempre ser uma preocupa\u00e7\u00e3o principal para qualquer organiza\u00e7\u00e3o. A oferta de 2FA ou MFA protege as contas de funcion\u00e1rios e clientes contra acesso n\u00e3o autorizado. Se voc\u00ea j\u00e1 tem MFA ou 2FA configurado, pode ser hora de investir em upgrades. As tecnologias mais antigas podem n\u00e3o ser mais seguras, e o investimento em seguran\u00e7a adicional \u00e9 muito mais barato do que um comprometimento de dados. Se voc\u00ea n\u00e3o sabe o que fazer para implementar uma solu\u00e7\u00e3o de autentica\u00e7\u00e3o, pode pedir ajuda a um especialista em seguran\u00e7a durante o processo.<\/p>\n\n\n\n

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Proteger os dados \u00e9 essencial nesta era digital. Saiba como a autentica\u00e7\u00e3o multifator (MFA) e a autentica\u00e7\u00e3o de dois fatores (2FA) podem ajudar na seguran\u00e7a.<\/p>\n","protected":false},"author":685,"featured_media":155804,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_ppma_block_editor_authors":""},"categories":[14594],"tags":[14559,14557],"content-position":[],"ppma_author":[14047],"class_list":["post-155802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-purely-educational","tag-cyber-resiliency-pt-br","tag-cybersecurity-pt-br"],"acf":[],"yoast_head":"\nMFA vs. 2FA: qual \u00e9 a diferen\u00e7a?\u00a0 | Everpure Blog<\/title>\n<meta name=\"description\" content=\"Proteger os dados \u00e9 essencial nesta era digital. 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