{"id":210746,"date":"2025-03-14T07:55:09","date_gmt":"2025-03-14T14:55:09","guid":{"rendered":"https:\/\/www.mcafee.com\/blogs\/?p=210746"},"modified":"2025-03-14T07:55:09","modified_gmt":"2025-03-14T14:55:09","slug":"como-reconhecer-o-cada-vez-mais-omnipresente-deepfake","status":"publish","type":"post","link":"https:\/\/www.mcafee.com\/blogs\/pt-pt\/internet-security\/como-reconhecer-o-cada-vez-mais-omnipresente-deepfake\/","title":{"rendered":"Como reconhecer o cada vez mais omnipresente deepfake"},"content":{"rendered":"<p><span data-contrast=\"auto\">A Internet est\u00e1 repleta de conte\u00fados concebidos para entreter, informar &#8211; e por vezes enganar. Qual \u00e9 a mais recente ferramenta no arsenal de um cibercriminoso? O deepfake, claro! <\/span><\/p>\n<p><span data-contrast=\"auto\">Desde endossos falsificados de celebridades at\u00e9 entrevistas de emprego enganosas, as fraudes com deepfakes gerados por IA est\u00e3o a crescer a um ritmo alarmante. \u00c0 medida que a tecnologia deepfake se torna mais avan\u00e7ada, \u00e9 mais dif\u00edcil do que nunca discernir o real do falso &#8211; at\u00e9 ser demasiado tarde.<\/span><\/p>\n<p>De acordo com o \u00faltimo relat\u00f3rio <a href=\"https:\/\/www.scribd.com\/document\/819363138\/McAfee-Scamiverse2025\">&#8220;O universo das fraudes online&#8221; da McAfee<\/a>, as fraudes com deepfake tornaram-se uma realidade quotidiana. O americano m\u00e9dio encontra atualmente 2,6 v\u00eddeos com deepfake por dia, sendo que os adultos mais jovens (18-24 anos) veem ainda mais: cerca de 3,5 por dia.<\/p>\n<p>Por menos do que o custo de um caf\u00e9 com leite e em menos de 10 minutos, os fraudadores podem hoje criar v\u00eddeos deepfake chocantemente convincentes de qualquer pessoa: a sua m\u00e3e, o seu chefe ou mesmo o seu filho.<\/p>\n<p><span data-contrast=\"auto\">Na <a href=\"https:\/\/www.mcafee.com\/pt-pt\/antivirus\/mcafee-total-protection.html?path=blogs\">McAfee<\/a>, estamos empenhados em ajudar os utilizadores a navegar neste cen\u00e1rio de amea\u00e7as em evolu\u00e7\u00e3o com ferramentas de prote\u00e7\u00e3o de ponta. Compreender como funcionam os esquemas de deepfake e como se pode proteger \u00e9 o primeiro passo para se manter \u00e0 frente dos cibercriminosos.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><b><span data-contrast=\"none\">A amea\u00e7a crescente das fraudes com deepfake<\/span><\/b><\/h2>\n<p><span data-contrast=\"auto\">As fraudes com deepfake exploram o poder da IA para criar \u00e1udio, v\u00eddeo e imagens hiper-realistas que podem fazer-se passar por qualquer pessoa &#8211; de pol\u00edticos a diretores executivos, de membros da fam\u00edlia a estrelas de Hollywood. Estes v\u00eddeos e vozes falsos t\u00eam sido utilizados para:<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559683&quot;:0,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Fazer-se passar por executivos<\/span><\/b><span data-contrast=\"auto\"> para autorizar transa\u00e7\u00f5es fraudulentas, o que custa milh\u00f5es \u00e0s empresas.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559683&quot;:0,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"2\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Fabricar endossos de celebridades<\/span><\/b><span data-contrast=\"auto\"> para promover investimentos fraudulentos, enganando consumidores desavisados.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559683&quot;:0,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Imitar entes queridos<\/span><\/b><span data-contrast=\"auto\"> em perigo para manipular as pessoas a enviar dinheiro.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559683&quot;:0,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"4\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Enganar os candidatos a emprego<\/span><\/b><span data-contrast=\"auto\"> com entrevistas falsas que conduzem ao roubo de identidade.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">A nossa investiga\u00e7\u00e3o mostra que as pessoas se deparam com quase tr\u00eas deepfakes por dia na Internet e que o n\u00famero est\u00e1 a aumentar, tornando a urg\u00eancia de combater estas fraudes maior do que nunca.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-207826\" src=\"https:\/\/www.mcafee.com\/blogs\/wp-content\/uploads\/2025\/01\/00AI-POPE-articleLarge.webp\" alt=\"\" width=\"600\" height=\"750\" srcset=\"https:\/\/www.mcafee.com\/blogs\/wp-content\/uploads\/2025\/01\/00AI-POPE-articleLarge.webp 600w, https:\/\/www.mcafee.com\/blogs\/wp-content\/uploads\/2025\/01\/00AI-POPE-articleLarge-240x300.webp 240w, https:\/\/www.mcafee.com\/blogs\/wp-content\/uploads\/2025\/01\/00AI-POPE-articleLarge-103x129.webp 103w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p style=\"text-align: center;\"><em>Figura 1: Uma imagem do Papa gerada por IA tornou-se viral na Internet. <\/em><\/p>\n<h2 aria-level=\"2\"><b><span data-contrast=\"none\">Como funcionam as fraudes com deepfake<\/span><\/b><\/h2>\n<p><span data-contrast=\"auto\">As fraudes com deepfake seguem normalmente um padr\u00e3o previs\u00edvel:<\/span><\/p>\n<ol>\n<li><b><span data-contrast=\"auto\">Recolha de dados:<\/span><\/b><span data-contrast=\"auto\"> os cibercriminosos vasculham as redes sociais, entrevistas e imagens publicamente dispon\u00edveis para recolher imagens e amostras de voz do seu alvo.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Manipula\u00e7\u00e3o de IA:<\/span><\/b><span data-contrast=\"auto\"> utilizando algoritmos de aprendizagem profunda, os fraudadores criam v\u00eddeos sint\u00e9ticos ou grava\u00e7\u00f5es de voz altamente convincentes.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Visar as v\u00edtimas:<\/span><\/b><span data-contrast=\"auto\"> o conte\u00fado fabricado \u00e9 depois distribu\u00eddo atrav\u00e9s de e-mails de phishing, redes sociais ou mensagens diretas para enganar as v\u00edtimas desprevenidas.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Execu\u00e7\u00e3o da fraude:<\/span><\/b><span data-contrast=\"auto\"> Uma vez conquistada a confian\u00e7a, os vigaristas manipulam as v\u00edtimas para que efetuem transa\u00e7\u00f5es financeiras, partilhem dados confidenciais ou cliquem em liga\u00e7\u00f5es maliciosas.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<\/ol>\n<h2 aria-level=\"2\"><b><span data-contrast=\"none\">Detete um deepfake antes que seja tarde demais<\/span><\/b><\/h2>\n<p><span data-contrast=\"auto\">Embora a tecnologia deepfake esteja a tornar-se cada vez mais sofisticada, ainda h\u00e1 formas de identificar o engano gerado pela IA:<\/span><\/p>\n<ul>\n<li><b><span data-contrast=\"auto\">Movimentos faciais n\u00e3o naturais:<\/span><\/b><span data-contrast=\"auto\"> procure padr\u00f5es estranhos de pestanejar, express\u00f5es faciais r\u00edgidas ou l\u00e1bios que n\u00e3o se sincronizam corretamente com a fala.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Inconsist\u00eancias de \u00e1udio estranhas:<\/span><\/b><span data-contrast=\"auto\"> preste aten\u00e7\u00e3o \u00e0s vozes com som rob\u00f3tico, pausas n\u00e3o naturais ou falta de respira\u00e7\u00e3o.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Inconsist\u00eancias na ilumina\u00e7\u00e3o e nas sombras:<\/span><\/b><span data-contrast=\"auto\"> os v\u00eddeos deepfake t\u00eam muitas vezes dificuldades com a ilumina\u00e7\u00e3o realista, causando sombras n\u00e3o naturais ou desalinhadas.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Pedidos invulgares:<\/span><\/b><span data-contrast=\"auto\"> se algu\u00e9m que se diz amigo ou executivo lhe pedir dinheiro ou dados confidenciais, verifique atrav\u00e9s de outro canal de comunica\u00e7\u00e3o antes de atuar.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<h2 aria-level=\"2\"><b><span data-contrast=\"none\">Proteger-se de fraudes com deepfake<\/span><\/b><\/h2>\n<p><span data-contrast=\"auto\">Para se manter um passo \u00e0 frente dos cibercriminosos, considere estas medidas de seguran\u00e7a:<\/span><\/p>\n<ul>\n<li><b><span data-contrast=\"auto\">Verifique as informa\u00e7\u00f5es de v\u00e1rias fontes:<\/span><\/b><span data-contrast=\"auto\"> Antes de acreditar num v\u00eddeo ou mensagem chocante, consulte ag\u00eancias noticiosas com boa reputa\u00e7\u00e3o ou sites de verifica\u00e7\u00e3o de factos como o Snopes e o PolitiFact.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Desconfie dos pedidos inesperados:<\/span><\/b><span data-contrast=\"auto\"> se algu\u00e9m disser que \u00e9 um familiar ou um executivo que precisa de uma a\u00e7\u00e3o urgente, confirme a sua identidade atrav\u00e9s de um m\u00e9todo fi\u00e1vel antes de aceder ao pedido.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Proteja a sua presen\u00e7a online:<\/span><\/b><span data-contrast=\"auto\"> limite os dados pessoais que partilha publicamente para reduzir o risco dos fraudadores utilizarem a sua voz ou imagem em deepfakes.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Utilize ferramentas de ciberseguran\u00e7a fortes:<\/span><\/b><span data-contrast=\"auto\"> instale <\/span><a href=\"https:\/\/www.mcafee.com\/pt-pt\/antivirus\/mcafee-total-protection.html?path=blogs\"><b><span data-contrast=\"auto\">o McAfee\u00ae Total Protection<\/span><\/b><\/a><span data-contrast=\"auto\"> para proteger os seus dispositivos, a sua identidade e a sua privacidade contra as amea\u00e7as emergentes com tecnologia de IA.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">As fraudes com deepfake n\u00e3o s\u00e3o apenas uma preocupa\u00e7\u00e3o futurista, s\u00e3o um perigo real e presente. Os cibercriminosos continuar\u00e3o a aperfei\u00e7oar as suas t\u00e1ticas, mas com a sensibiliza\u00e7\u00e3o correta e as ferramentas de seguran\u00e7a, pode ser mais esperto do que eles.<\/span><\/p>\n<p><span data-contrast=\"auto\">A McAfee continua na vanguarda das solu\u00e7\u00f5es de seguran\u00e7a com tecnologia de IA, garantindo-lhe a prote\u00e7\u00e3o de que necessita num mundo digital cada vez mais enganador.<\/span><\/p>\n<p><span data-contrast=\"auto\">Mantenha-se um passo \u00e0 frente das amea\u00e7as de deepfake. <\/span><b><span data-contrast=\"auto\"><a href=\"https:\/\/www.mcafee.com\/pt-pt\/antivirus\/mcafee-total-protection.html?path=blogs\">Transfira hoje mesmo o McAfee\u00ae Total Protection<\/a> e assuma o controlo da sua seguran\u00e7a online.<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Internet est\u00e1 repleta de conte\u00fados concebidos para entreter, informar &#8211; e por vezes enganar. Qual \u00e9 a mais recente&#8230;<\/p>\n","protected":false},"author":1440,"featured_media":209702,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14389],"tags":[],"coauthors":[15735],"class_list":["post-210746","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internet-security"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Como reconhecer o cada vez mais omnipresente deepfake | Blogue da McAfee<\/title>\n<meta name=\"description\" content=\"A Internet est\u00e1 repleta de conte\u00fados concebidos para entreter, informar - e por vezes enganar. 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