{"id":7047,"date":"2021-03-22T16:20:37","date_gmt":"2021-03-22T16:20:37","guid":{"rendered":"https:\/\/198.27.90.141\/?p=7047"},"modified":"2026-09-29T18:36:00","modified_gmt":"2026-09-29T18:36:00","slug":"o-que-e-spoofing-de-dominio","status":"publish","type":"post","link":"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-spoofing-de-dominio\/","title":{"rendered":"O que \u00e9 spoofing de dom\u00ednio?"},"content":{"rendered":"<p>O spoofing de dom\u00ednio \u00e9 uma t\u00e1tica utilizada por cibercriminosos para cometer golpes e fraudes na internet. Ele ocorre quando um invasor tenta se passar por uma empresa, um funcion\u00e1rio ou algu\u00e9m conhecido para confundir e persuadir uma pessoa. Como? Falsificando um dom\u00ednio. O spoofing de dom\u00ednio est\u00e1 diretamente ligado \u00e0 <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-engenharia-social\/\" target=\"_blank\" rel=\"noopener\">engenharia social<\/a>, a campanhas de <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-spam\/\" target=\"_blank\" rel=\"noopener\">spam<\/a> e a golpes de <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-phishing\/\" target=\"_blank\" rel=\"noopener\">phishing<\/a> e <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-spear-phishing\/\" target=\"_blank\" rel=\"noopener\">spear phishing<\/a>, como, por exemplo, <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-bec-business-email-compromise-fraudedoceo\/\" target=\"_blank\" rel=\"noopener\">Business Email Compromise (BEC)<\/a> and Email Account Compromise (EAC).<\/p>\n<p>Na pr\u00e1tica, o spoofing de dom\u00ednio \u00e9 utilizado pelos hackers de diferentes maneiras. Pode ser, por exemplo, atrav\u00e9s da simples adi\u00e7\u00e3o de uma letra em um endere\u00e7o de e-mail ou da cria\u00e7\u00e3o de um site falso que tenha um endere\u00e7o bem parecido com o leg\u00edtimo. Na correria do dia a dia, essas pequenas mudan\u00e7as acabam passando desapercebidas por muitas pessoas.<\/p>\n<p>Mas o sucesso de um golpe n\u00e3o depende apenas disso, \u00e9 claro. Os cibercriminosos geralmente s\u00e3o pessoas inteligentes. Os golpes envolvendo spoofing de dom\u00ednio s\u00e3o cuidadosamente preparados. Por isso, toda a identidade visual de uma empresa costuma ser forjada em e-mails e sites falsos, incluindo logotipo, cores e qualquer outro detalhe visual que imite a vers\u00e3o original e oficial.<\/p>\n<h2>Tipos de spoofing de dom\u00ednio<\/h2>\n<p>N\u00f3s podemos dizer que existem duas categorias principais de spoofing de dom\u00ednio. Dentro dessas categorias h\u00e1 algumas varia\u00e7\u00f5es.<\/p>\n<h3>1. Spoofing de e-mail<\/h3>\n<p>O spoofing de e-mail trata-se da falsifica\u00e7\u00e3o de endere\u00e7os de e-mail. Isto pode acontecer basicamente de duas maneiras. Primeira, o invasor hackeia uma conta de e-mail e a utiliza para cometer fraudes. Segunda, o cibercriminoso cria um endere\u00e7o de e-mail similar ou falsifica alguma parte de um e-mail para dar a entender que a mensagem \u00e9 leg\u00edtima.<\/p>\n<p>O objetivo do spoofing de e-mail \u00e9 ganhar a confian\u00e7a do destinat\u00e1rio. Isto tem tudo a ver com engenharia social, campanhas de spam e golpes de phishing e spear phishing.<\/p>\n<h3>2. Spoofing de site<\/h3>\n<p>O spoofing de site trata-se da cria\u00e7\u00e3o de um endere\u00e7o de site falso. O objetivo continua sendo conquistar a confian\u00e7a da v\u00edtima para depois engan\u00e1-la. Nestes casos, os sites falsos s\u00e3o muito parecidos com os leg\u00edtimos.<\/p>\n<p>Frequentemente, as <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-url-maliciosa\/\" target=\"_blank\" rel=\"noopener\">URLs<\/a> apresentam apenas algumas varia\u00e7\u00f5es de letras. O spoofing de site \u00e9 ainda mais utilizado pr\u00f3ximo de datas festivas e de compras, como a <a href=\"https:\/\/gatefy.com\/pt-br\/postagem\/10-dicas-para-evitar-golpes-na-black-friday\/\" target=\"_blank\" rel=\"noopener\">Black Friday<\/a>. Tamb\u00e9m est\u00e1 muito ligado a engenharia social, spam, phishing e spear phishing.<\/p>\n<h2>Casos e exemplos de spoofing de dom\u00ednio<\/h2>\n<p>Imagine que um hacker criou um site falso que se parece muito com o site do seu banco. E voc\u00ea recebeu no seu e-mail uma mensagem que aparentemente tem como remetente a mesma institui\u00e7\u00e3o. O e-mail diz que algu\u00e9m tentou acessar a sua conta indevidamente em algum pa\u00eds distante. Voc\u00ea ent\u00e3o \u00e9 induzido a clicar no link, a acessar o site e a fornecer informa\u00e7\u00f5es para resolver a quest\u00e3o. Voc\u00ea j\u00e1 sabe como essa hist\u00f3ria termina, certo?<\/p>\n<p>\u00c9 interessante perceber, nestes casos, que o spoofing de e-mail e o spoofing de site costumam ser utilizados dentro do mesmo golpe, do mesmo esquema.<\/p>\n<p>Tamb\u00e9m \u00e9 poss\u00edvel que os cibercriminosos utilizem arquivos maliciosos para infectar a sua m\u00e1quina com ransomware, <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-spyware\/\" target=\"_blank\" rel=\"noopener\">spyware<\/a> ou qualquer outro tipo de malware. Imagine que voc\u00ea precisa abrir um arquivo que recebeu por e-mail e foi supostamente enviado pelo CEO da sua empresa. O estrago pode ser bem grande para o neg\u00f3cio.<\/p>\n<p>Em casos de golpes mais sofisticados, o invasor usar\u00e1 apenas o spoofing de e-mail. Ele vai tentar se passar por um parceiro ou algu\u00e9m de dentro da empresa, especialmente um funcion\u00e1rio de C-level, para solicitar o pagamento de uma fatura ou uma transfer\u00eancia eletr\u00f4nica.<\/p>\n<p>Tanto os casos de spoofing de site quanto de spoofing de e-mail est\u00e3o ligados a ganhar dinheiro ilegalmente, a roubar informa\u00e7\u00f5es confidenciais que podem ser utilizadas em outros golpes, a espionar, a vender dados secretos e at\u00e9 a invadir m\u00e1quinas com o objetivo de torn\u00e1-las rob\u00f4s, ou botnets.<\/p>\n<h2>Como combater spoofing<\/h2>\n<p>No caso dos e-mails, existem mecanismos de autentica\u00e7\u00e3o que ajudam no combate ao spoofing, como <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-spf-sender-policy-framework\/\" target=\"_blank\" rel=\"noopener\">SPF<\/a>, <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-dkim-domainkeys-identified-mail\/\" target=\"_blank\" rel=\"noopener\">DKIM<\/a> e <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-dmarc\/\" target=\"_blank\" rel=\"noopener\">DMARC<\/a>. Existem tamb\u00e9m ferramentas mais completas, como as solu\u00e7\u00f5es de <a href=\"https:\/\/gatefy.com\/pt-br\/blog\/o-que-e-um-secure-email-gateway-seg\/\" target=\"_blank\" rel=\"noopener\">Secure Email Gateway<\/a>, que permitem, inclusive, configurar esses mecanismos de autentica\u00e7\u00e3o que acabamos de mencionar.<\/p>\n<p>No geral, as dicas de seguran\u00e7a s\u00e3o: ter aten\u00e7\u00e3o com e-mails e sites que exigem informa\u00e7\u00f5es confidenciais, verificar atentamente endere\u00e7os de e-mail e sites, n\u00e3o clicar em anexos e URLs suspeitos. Se voc\u00ea precisar verificar a legitimidade de uma mensagem, procure outras maneiras de faz\u00ea-lo.<\/p>\n<p>E, se voc\u00ea receber uma mensagem para atualizar uma conta ou com uma oferta imperd\u00edvel, n\u00e3o clique no link. Em vez disso, v\u00e1 diretamente ao site oficial da empresa. Estas s\u00e3o as principais dicas para manter voc\u00ea e a sua empresa protegidos contra o spoofing de dom\u00ednio e outras amea\u00e7as.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O spoofing de dom\u00ednio \u00e9 uma t\u00e1tica utilizada por cibercriminosos para cometer golpes e fraudes na internet. Ele ocorre quando um invasor tenta se passar por uma empresa, um funcion\u00e1rio ou algu\u00e9m conhecido para confundir e persuadir uma pessoa. Como? Falsificando um dom\u00ednio. O spoofing de dom\u00ednio est\u00e1 diretamente ligado \u00e0 engenharia social, a campanhas [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":7048,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,37],"tags":[],"class_list":["post-7047","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-educacao"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>O que \u00e9 spoofing de dom\u00ednio? - Gatefy<\/title>\n<meta name=\"description\" content=\"O spoofing de dom\u00ednio \u00e9 uma t\u00e1tica usada por cibercriminosos para cometer golpes e fraudes na Internet. 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