{"id":64013,"date":"2025-02-10T15:32:19","date_gmt":"2025-02-10T14:32:19","guid":{"rendered":"https:\/\/blog.mailfence.com\/engenharia-social-o-que-e-scareware\/"},"modified":"2025-09-16T15:58:46","modified_gmt":"2025-09-16T13:58:46","slug":"engenharia-social-o-que-e-scareware","status":"publish","type":"post","link":"https:\/\/blog.mailfence.com\/pt\/engenharia-social-o-que-e-scareware\/","title":{"rendered":"Scareware explicado: Como identificar e evitar alertas de seguran\u00e7a falsos"},"content":{"rendered":"\n<p>O scareware \u00e9 uma t\u00e9cnica de <a href=\"https:\/\/blog.mailfence.com\/pt\/o-que-e-engenharia-social\/\">engenharia social<\/a> cujo objetivo \u00e9 assustar a v\u00edtima, fazendo-a acreditar que o seu dispositivo est\u00e1 infectado.<\/p>\n\n\n\n<p><strong>A ideia por tr\u00e1s dessa t\u00e9cnica \u00e9 a<strong>fazer com que a v\u00edtima<\/strong> baixe softwares maliciosos <strong>(malware) <\/strong>para resolver o problema.<\/strong><\/p>\n\n\n\n<p>Uma vez instalado, esse malware pode dar aos invasores acesso a dados confidenciais ou at\u00e9 mesmo acesso remoto ao computador. Neste guia, examinaremos detalhadamente: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Como s\u00e3o os ataques de scareware;<\/li>\n\n\n\n<li>Como voc\u00ea pode se proteger;<\/li>\n\n\n\n<li>E o impacto da IA nas t\u00e1ticas de scareware.<\/li>\n<\/ul>\n\n\n\n<p>Vamos explorar.<\/p>\n\n\n\t\t<div data-elementor-type=\"section\" data-elementor-id=\"100849\" class=\"elementor elementor-100849 elementor-100761\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-124e1725 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"124e1725\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-654e4e21\" data-id=\"654e4e21\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3a3b1a23 elementor-widget elementor-widget-text-editor\" data-id=\"3a3b1a23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Mailfence &#8211; Sua su\u00edte de produtividade segura<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c004279 elementor-widget elementor-widget-text-editor\" data-id=\"2c004279\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Recupere sua privacidade com<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83e0dd6 elementor-icon-list--layout-inline elementor-align-center elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"83e0dd6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items elementor-inline-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-envelope-open-text\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M176 216h160c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16H176c-8.84 0-16 7.16-16 16v16c0 8.84 7.16 16 16 16zm-16 80c0 8.84 7.16 16 16 16h160c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16H176c-8.84 0-16 7.16-16 16v16zm96 121.13c-16.42 0-32.84-5.06-46.86-15.19L0 250.86V464c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V250.86L302.86 401.94c-14.02 10.12-30.44 15.19-46.86 15.19zm237.61-254.18c-8.85-6.94-17.24-13.47-29.61-22.81V96c0-26.51-21.49-48-48-48h-77.55c-3.04-2.2-5.87-4.26-9.04-6.56C312.6 29.17 279.2-.35 256 0c-23.2-.35-56.59 29.17-73.41 41.44-3.17 2.3-6 4.36-9.04 6.56H96c-26.51 0-48 21.49-48 48v44.14c-12.37 9.33-20.76 15.87-29.61 22.81A47.995 47.995 0 0 0 0 200.72v10.65l96 69.35V96h320v184.72l96-69.35v-10.65c0-14.74-6.78-28.67-18.39-37.77z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Mensagens<\/b><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-calendar-alt\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M148 288h-40c-6.6 0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12zm108-12v-40c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6 0 12-5.4 12-12zm96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6 0 12-5.4 12-12zm-96 96v-40c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6 0 12-5.4 12-12zm-96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6 0 12-5.4 12-12zm192 0v-40c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6 0 12-5.4 12-12zm96-260v352c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V112c0-26.5 21.5-48 48-48h48V12c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v52h128V12c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v52h48c26.5 0 48 21.5 48 48zm-48 346V160H48v298c0 3.3 2.7 6 6 6h340c3.3 0 6-2.7 6-6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Calend\u00e1rios<\/b><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-folder\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49 0 112v288c0 26.51 21.49 48 48 48h416c26.51 0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Documentos<\/b><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-users-cog\" viewBox=\"0 0 640 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M610.5 341.3c2.6-14.1 2.6-28.5 0-42.6l25.8-14.9c3-1.7 4.3-5.2 3.3-8.5-6.7-21.6-18.2-41.2-33.2-57.4-2.3-2.5-6-3.1-9-1.4l-25.8 14.9c-10.9-9.3-23.4-16.5-36.9-21.3v-29.8c0-3.4-2.4-6.4-5.7-7.1-22.3-5-45-4.8-66.2 0-3.3.7-5.7 3.7-5.7 7.1v29.8c-13.5 4.8-26 12-36.9 21.3l-25.8-14.9c-2.9-1.7-6.7-1.1-9 1.4-15 16.2-26.5 35.8-33.2 57.4-1 3.3.4 6.8 3.3 8.5l25.8 14.9c-2.6 14.1-2.6 28.5 0 42.6l-25.8 14.9c-3 1.7-4.3 5.2-3.3 8.5 6.7 21.6 18.2 41.1 33.2 57.4 2.3 2.5 6 3.1 9 1.4l25.8-14.9c10.9 9.3 23.4 16.5 36.9 21.3v29.8c0 3.4 2.4 6.4 5.7 7.1 22.3 5 45 4.8 66.2 0 3.3-.7 5.7-3.7 5.7-7.1v-29.8c13.5-4.8 26-12 36.9-21.3l25.8 14.9c2.9 1.7 6.7 1.1 9-1.4 15-16.2 26.5-35.8 33.2-57.4 1-3.3-.4-6.8-3.3-8.5l-25.8-14.9zM496 368.5c-26.8 0-48.5-21.8-48.5-48.5s21.8-48.5 48.5-48.5 48.5 21.8 48.5 48.5-21.7 48.5-48.5 48.5zM96 224c35.3 0 64-28.7 64-64s-28.7-64-64-64-64 28.7-64 64 28.7 64 64 64zm224 32c1.9 0 3.7-.5 5.6-.6 8.3-21.7 20.5-42.1 36.3-59.2 7.4-8 17.9-12.6 28.9-12.6 6.9 0 13.7 1.8 19.6 5.3l7.9 4.6c.8-.5 1.6-.9 2.4-1.4 7-14.6 11.2-30.8 11.2-48 0-61.9-50.1-112-112-112S208 82.1 208 144c0 61.9 50.1 112 112 112zm105.2 194.5c-2.3-1.2-4.6-2.6-6.8-3.9-8.2 4.8-15.3 9.8-27.5 9.8-10.9 0-21.4-4.6-28.9-12.6-18.3-19.8-32.3-43.9-40.2-69.6-10.7-34.5 24.9-49.7 25.8-50.3-.1-2.6-.1-5.2 0-7.8l-7.9-4.6c-3.8-2.2-7-5-9.8-8.1-3.3.2-6.5.6-9.8.6-24.6 0-47.6-6-68.5-16h-8.3C179.6 288 128 339.6 128 403.2V432c0 26.5 21.5 48 48 48h255.4c-3.7-6-6.2-12.8-6.2-20.3v-9.2zM173.1 274.6C161.5 263.1 145.6 256 128 256H64c-35.3 0-64 28.7-64 64v32c0 17.7 14.3 32 32 32h65.9c6.3-47.4 34.9-87.3 75.2-109.4z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Grupos<\/b><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-436babb elementor-align-center elementor-widget elementor-widget-button\" data-id=\"436babb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/mailfence.com\/pt\/#pricing\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Crie sua conta gratuita no Mailfence<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-o-que-e-scareware\">O que \u00e9 Scareware?<\/h2>\n\n\n\n<p>Mas afinal, o que \u00e9 scareware?<\/p>\n\n\n\n<p><strong>Scareware vem da contra\u00e7\u00e3o de &#8220;scare&#8221; (assustar) e &#8220;software&#8221;, ou seja, assustar voc\u00ea para que fa\u00e7a o download de um software.<\/strong><\/p>\n\n\n\n<p>Voc\u00ea j\u00e1 viu um pop-up na sua tela dizendo algo como:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&#8220;Aten\u00e7\u00e3o! Alerta de v\u00edrus!&#8221;;<\/li>\n\n\n\n<li>ou &#8220;Cuidado! 5 v\u00edrus detectados!&#8221;?<\/li>\n<\/ul>\n\n\n\n<p>Estes s\u00e3o t\u00edpicos exemplos de scareware. Os invasores querem convenc\u00ea-lo (por meio do medo) de que seu dispositivo est\u00e1 infectado com um v\u00edrus e que voc\u00ea deve fazer download (ou, \u00e0s vezes, comprar) um software mal-intencionado:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/scareware.jpg\" alt=\"Captura de tela de um alerta pop-up t\u00edpico de scareware.\" class=\"wp-image-94683\" style=\"width:414px;height:auto\" srcset=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/scareware.jpg 600w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/scareware-300x300.jpg 300w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/scareware-150x150.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\"><em>Captura de tela de um alerta pop-up t\u00edpico de scareware<\/em><\/figcaption><\/figure>\n\n\n\n<p>Assim como outras t\u00e9cnicas de engenharia social, o scareware usa as emo\u00e7\u00f5es e rea\u00e7\u00f5es humanas:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Senso de urg\u00eancia<\/strong>: as pessoas costumam agir sem pensar quando acreditam que h\u00e1 uma amea\u00e7a imediata e urgente;<br><\/li>\n\n\n\n<li><strong>Medo<\/strong>: diante de uma s\u00fabita sensa\u00e7\u00e3o de p\u00e2nico, as pessoas geralmente se esquecem de verificar duas vezes os sinais de alerta. Elas s\u00e3o levadas a agir sem ter tempo para considerar as implica\u00e7\u00f5es de suas a\u00e7\u00f5es.<\/li>\n<\/ul>\n\n\n\n<p>\u00c9 importante observar que o scareware \u00e9 geralmente a primeira etapa de um ataque cibern\u00e9tico mais complexo, e n\u00e3o um ataque em si. O scareware geralmente se apresenta como um pop-up, redirecionando voc\u00ea para um site falso. L\u00e1, voc\u00ea pode ser solicitado a baixar algum malware ou inserir algumas credenciais.<\/p>\n\n\n\n<p>Em termos mais gerais, o scareware pertence a uma classe de ataques chamada &#8220;golpes de suporte t\u00e9cnico&#8221;. Esses golpes, que tamb\u00e9m podem ocorrer por meio de mensagens <a href=\"https:\/\/blog.mailfence.com\/pt\/engenharia-social-smishing\/\" target=\"_blank\" rel=\"noreferrer noopener\">(smishing<\/a>) ou chamadas telef\u00f4nicas <a href=\"https:\/\/blog.mailfence.com\/vishing\/\" target=\"_blank\" rel=\"noreferrer noopener\">(vishing<\/a>), parecem querer &#8220;ajudar voc\u00ea a proteger seu computador&#8221;.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-estudos-de-caso-reais-de-scareware\">Estudos de caso reais de scareware<\/h2>\n\n\n\n<p>Vejamos agora alguns exemplos reais de scareware e o impacto que eles tiveram.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-o-ataque-de-scareware-do-mac-defender-2009\">O ataque de scareware do MAC Defender (2009)<\/h3>\n\n\n\n<p>Em 2011, os usu\u00e1rios de Mac se depararam com o &#8220;MAC Defender&#8221; pela primeira vez.<\/p>\n\n\n\n<p>Quando pesquisavam termos como &#8220;mac removal virus&#8221;, eles eram redirecionados a sites de antiv\u00edrus falsos. Esses sites os deixavam ainda mais alarmados, dizendo que o computador estava infectado com v\u00e1rios v\u00edrus.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/mac-defender.jpg\" alt=\"Uma vez instalado, o MAC Defender parecia um software antiv\u00edrus leg\u00edtimo\" class=\"wp-image-94688\" style=\"width:432px;height:auto\" srcset=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/mac-defender.jpg 600w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/mac-defender-300x300.jpg 300w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/mac-defender-150x150.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\"><em>Uma vez instalado, o MAC Defender parecia um software antiv\u00edrus leg\u00edtimo<\/em><\/figcaption><\/figure>\n\n\n\n<p>Uma vez instalado, o software bombardeava os usu\u00e1rios com falsos avisos de v\u00edrus. Em seguida, exigia o pagamento de uma vers\u00e3o &#8220;premium&#8221; para remover as supostas amea\u00e7as (entre US$ 60 e US$ 80).<\/p>\n\n\n\n<p>Rapidamente, dezenas de milhares de chamadas foram feitas para o suporte da Apple, todas relacionadas ao MAC Defender. Em maio de 2011, a Apple finalmente emitiu instru\u00e7\u00f5es para remover o software, assim como uma atualiza\u00e7\u00e3o de seguran\u00e7a que o removeria automaticamente.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ataque-do-minneapolis-star-tribune-2010\">Ataque do Minneapolis Star Tribune (2010)<\/h3>\n\n\n\n<p>Em 2010, os visitantes do site do Minneapolis Star Tribune foram alvo de pop-ups informando que seus computadores estavam infectados.<\/p>\n\n\n\n<p><strong>Para conseguir isso, os invasores criaram uma ag\u00eancia de publicidade que exibia an\u00fancios leg\u00edtimos no site.<\/strong><\/p>\n\n\n\n<p>No entanto, esses an\u00fancios foram posteriormente substitu\u00eddos por an\u00fancios fraudulentos, solicitando aos usu\u00e1rios que comprassem um software antiv\u00edrus por US$ 49,95. Quando percebeu a fraude, o Start Tribune desativou toda a publicidade on-line em seu site. Uma investiga\u00e7\u00e3o foi iniciada, levando a uma pris\u00e3o em 2016.<\/p>\n\n\n\n<p>Em 2018, o homem por tr\u00e1s do golpe, Peteris Sahurovs, foi condenado a 33 meses de pris\u00e3o. Estima-se que ele tenha lucrado entre US$ 150 e 250 mil com seu esquema.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/antivirus-soft.jpg\" alt=\"&quot;Ataque de scareware &quot;Antivirus Soft\" class=\"wp-image-94694\" style=\"width:398px;height:auto\" srcset=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/antivirus-soft.jpg 600w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/antivirus-soft-300x300.jpg 300w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/antivirus-soft-150x150.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\"><em>Ataque de scareware do Antivirus Soft<\/em><\/figcaption><\/figure>\n\n\n\n<p>Voc\u00ea pode ler mais sobre esse caso no <a href=\"https:\/\/www.justice.gov\/archives\/opa\/pr\/latvian-national-pleads-guilty-scareware-hacking-scheme-targeted-minneapolis-star-tribune\" target=\"_blank\" rel=\"noreferrer noopener\">site do Departamento de Justi\u00e7a<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-como-identificar-um-scareware\">Como identificar um Scareware?<\/h2>\n\n\n\n<p>Normalmente, o scareware vem na forma de um pop-up que parece ter sido enviado por uma empresa de software. Aqui est\u00e3o cinco sinais de alerta comuns:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A notifica\u00e7\u00e3o vem de uma empresa de software da qual voc\u00ea nunca ouviu falar;<br><\/li>\n\n\n\n<li>De alguma forma, o software j\u00e1 examinou seu dispositivo e detectou todos esses v\u00edrus;<br><\/li>\n\n\n\n<li>Fechar o pop-up \u00e9 dif\u00edcil (ou quase imposs\u00edvel);<br><\/li>\n\n\n\n<li>H\u00e1 um senso de urg\u00eancia (&#8220;voc\u00ea precisa agir r\u00e1pido&#8221;, &#8220;fa\u00e7a o download agora!&#8221;);<br><\/li>\n\n\n\n<li>O t\u00edtulo do pop-up sempre ser\u00e1 algo assustador, como &#8220;Aviso!&#8221; ou &#8220;V\u00edrus detectado!&#8221;.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-como-evitar-o-scareware\">Como evitar o Scareware?<\/h2>\n\n\n\n<p>Saber reconhecer um golpe de scareware e engenharia social \u00e9 o primeiro passo para se proteger contra este tipo de amea\u00e7a. No entanto, existem outras formas como evitar o scareware:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-nunca-reaja-imediatamente\">1. Nunca reaja imediatamente<\/h3>\n\n\n\n<p>Os criminosos especializados em scareware e engenharia social utilizam t\u00e9cnicas de manipula\u00e7\u00e3o e intimida\u00e7\u00e3o para induzir suas v\u00edtimas a agir sem pensar. Respire fundo, pare e avalie a situa\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-pense-racionalmente\">2. Pense racionalmente<\/h3>\n\n\n\n<p>Leia as entrelinhas e pense racionalmente:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Voc\u00ea j\u00e1 ouviu falar do software de antiv\u00edrus anunciado no pop-up? Provavelmente n\u00e3o, j\u00e1 que empresas de seguran\u00e7a leg\u00edtimas, como Norton e Kaspersky, n\u00e3o fazem esse tipo de coisa.<br><\/li>\n\n\n\n<li>Como este software foi capaz de escanear o seu dispositivo e identificar a presen\u00e7a de v\u00edrus se voc\u00ea nunca interagiu com ele antes? Normalmente, os v\u00edrus e softwares maliciosos s\u00f3 podem ser detectados se antiv\u00edrus estiver instalado no dispositivo. E mesmo assim, uma varredura completa pode levar horas para ser finalizada.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/fake-alert.jpg\" alt=\"Exemplo de um scareware falso de golpe de computador\" class=\"wp-image-94703\" style=\"width:516px;height:auto\" srcset=\"https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/fake-alert.jpg 600w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/fake-alert-300x300.jpg 300w, https:\/\/blog.mailfence.com\/wp-content\/uploads\/2022\/09\/fake-alert-150x150.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\"><em>Exemplo de um golpe de computador falso<\/em><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-nao-clique-em-links-desconhecidos\">3. N\u00e3o clique em links desconhecidos<\/h3>\n\n\n\n<p>N\u00e3o clique em bot\u00f5es ou links simplesmente porque eles dizem \u201cclique aqui!\u201d. Se voc\u00ea n\u00e3o conhece a empresa e a URL parece suspeita, \u00e9 prov\u00e1vel que voc\u00ea seja levado a um site malicioso ou, ironicamente, acabe baixando um v\u00edrus.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-4-feche-o-navegador-ao-inves-do-pop-up\">4. Feche o navegador ao inv\u00e9s do pop-up<\/h3>\n\n\n\n<p>Os pop-ups de scareware geralmente tem bot\u00f5es <strong>Fechar<\/strong> ou <strong>X<\/strong> falsos. Quando voc\u00ea clica neles, outro pop-up se abre, ou pior, o download de um v\u00edrus \u00e9 iniciado. Esta t\u00e9cnica \u00e9 conhecida como <a href=\"https:\/\/en.wikipedia.org\/wiki\/Clickjacking\">clickjacking<\/a>.<\/p>\n\n\n\n<p>Para evitar isso, feche totalmente o navegador.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-5-use-firewalls-bloqueadores-de-pop-up-e-filtros-de-url\">5. Use firewalls, bloqueadores de pop-up e filtros de URL<\/h3>\n\n\n\n<p>Use essas tr\u00eas op\u00e7\u00f5es para impedir que pop-ups apare\u00e7am na sua tela e facilitem esse ataque de engenharia social.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-6-utilize-apenas-softwares-legitimos\">6. Utilize apenas softwares leg\u00edtimos<\/h3>\n\n\n\n<p>Novamente, softwares de seguran\u00e7a confi\u00e1veis n\u00e3o utilizam pop-ups de alerta para anunciar os seus servi\u00e7os. Muito menos para quem n\u00e3o ainda n\u00e3o \u00e9 usu\u00e1rio.<\/p>\n\n\n\n<p>Use um software antiv\u00edrus confi\u00e1vel para verificar e remover regularmente os v\u00edrus do seu dispositivo, em vez de acreditar que um pop-up aleat\u00f3rio detectou magicamente um v\u00edrus (ou 50) nele.<\/p>\n\n\n\n<p>Saiba mais sobre como <a href=\"https:\/\/blog.mailfence.com\/pt\/dicas-para-proteger-seu-computador\/\">proteger seu computador de forma eficaz.<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-como-remover-o-scareware\">Como remover o Scareware?<\/h2>\n\n\n\n<p>Se voc\u00ea pulou todas as etapas acima e ainda assim baixou o scareware, n\u00e3o se preocupe, voc\u00ea pode remov\u00ea-lo.<\/p>\n\n\n\n<p>Em primeiro lugar, como voc\u00ea pode saber se tem scareware no computador?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Seu dispositivo come\u00e7a a funcionar muito mais lentamente do que o normal<\/li>\n\n\n\n<li>Pop-ups e an\u00fancios indesejados come\u00e7am a aparecer na sua tela<\/li>\n\n\n\n<li>Voc\u00ea n\u00e3o pode instalar um software de seguran\u00e7a leg\u00edtimo<\/li>\n<\/ul>\n\n\n\n<p>Ter uma ferramenta antiv\u00edrus leg\u00edtima de terceiros \u00e9 fundamental para remover o scareware do seu dispositivo. De fato, ela pode detectar e limpar a infec\u00e7\u00e3o que o scareware causou em primeiro lugar. <\/p>\n\n\n\n<p>Quando o dispositivo estiver livre de v\u00edrus e malware reais (e n\u00e3o dos falsos sobre os quais o scareware lhe falou), voc\u00ea poder\u00e1 erradicar o programa ofensivo do dispositivo.<\/p>\n\n\n\n<p><strong>No PC com Windows:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Abra o <strong>Configura\u00e7\u00f5es<\/strong>.<\/li>\n\n\n\n<li>Selecione <strong>Aplicativos<\/strong>.<\/li>\n\n\n\n<li>Localize o aplicativo de scareware e clique nele com o bot\u00e3o direito do mouse. Entre os mais comuns est\u00e3o o <strong>Mac Defender<\/strong> e <strong>o PC Clean Pro. <\/strong>\u00c0s vezes, eles at\u00e9 usam nomes falsos de ferramentas leg\u00edtimas, como <strong>MS Antivirus <\/strong>(copia o nome do <strong>Microsoft Antivirus)<\/strong>. <\/li>\n\n\n\n<li>Selecione <strong>Desinstalar<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p><strong>No Mac:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Acesse<strong> <\/strong>a janela <strong>do Finder <\/strong>.<\/li>\n\n\n\n<li><strong>Aplicativos<\/strong> abertos.<\/li>\n\n\n\n<li>Localize o programa de scareware e clique com o bot\u00e3o direito do mouse no \u00edcone e selecione <strong>Mover para o lixo <\/strong>ou arraste e solte o \u00edcone na lixeira.<\/li>\n\n\n\n<li>Clique com o bot\u00e3o direito do mouse no \u00edcone da lixeira e selecione <strong>Esvaziar lixo<\/strong>.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-consideracoes-finais\">Considera\u00e7\u00f5es finais<\/h2>\n\n\n\n<p>Como a maioria dos ataques de <a href=\"https:\/\/blog.mailfence.com\/pt\/o-que-e-engenharia-social\/\">engenharia social<\/a>, o scareware tenta manipular as emo\u00e7\u00f5es humanas para induzir suas v\u00edtimas ao erro. Reunimos as <a href=\"https:\/\/blog.mailfence.com\/pt\/engenharia-social\/\">dicas mais eficientes para voc\u00ea evitar a engenharia social<\/a>. A conscientiza\u00e7\u00e3o \u00e9 a chave para reconhecer essas t\u00e9cnicas. Por isso, criamos um <a href=\"https:\/\/blog.mailfence.com\/pt\/e-mail-seguro-privado\/\">curso sobre seguran\u00e7a e privacidade<\/a>.<\/p>\n\n\n\n<p>Confie apenas em programas e empresas de seguran\u00e7a leg\u00edtimos, como o <a href=\"https:\/\/mailfence.com\" target=\"_blank\" rel=\"noreferrer noopener\">Mailfence<\/a>, que oferece suporte \u00e0 <a href=\"https:\/\/blog.mailfence.com\/pt\/e-mail-seguro-criptografia-ponta-a-ponta\/\">criptografia de ponta a ponta<\/a> e \u00e0 <a href=\"https:\/\/kb.mailfence.com\/kb\/setup-2fa\/\">autentica\u00e7\u00e3o de dois<\/a> fatores. Saiba como <a href=\"https:\/\/blog.mailfence.com\/pt\/dicas-para-proteger-seu-computador\/\" target=\"_blank\" rel=\"noreferrer noopener\">proteger seu computador<\/a> e <a href=\"https:\/\/blog.mailfence.com\/pt\/dicas-proteger-dados\/\" target=\"_blank\" rel=\"noreferrer noopener\">proteger seus dados<\/a> contra hackers. Como os e-mails s\u00e3o a porta de entrada perfeita para os hackers, registrar-se em um provedor de e-mail seguro e privado \u00e9 a primeira etapa para recuperar <a href=\"https:\/\/blog.mailfence.com\/pt\/servico-email-privado\/\">a seguran\u00e7a e a privacidade<\/a> que voc\u00ea merece.<\/p>\n\n\n\n<p>Se voc\u00ea quiser saber mais sobre scareware e ataques cibern\u00e9ticos, n\u00e3o deixe de conferir os relat\u00f3rios e estudos a seguir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.crowdstrike.com\/en-us\/global-threat-report\/\" target=\"_blank\" rel=\"noreferrer noopener\">Relat\u00f3rio de amea\u00e7as globais de 2024 da Crowdstrike<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/reports.weforum.org\/docs\/WEF_Global_Cybersecurity_Outlook_2025.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Perspectivas da seguran\u00e7a cibern\u00e9tica global para 2025 pelo WEF<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.ibm.com\/account\/reg\/us-en\/signup?formid=urx-53217\" target=\"_blank\" rel=\"noreferrer noopener\">Relat\u00f3rio X-Force sobre o cen\u00e1rio de amea\u00e7as na nuvem 2024 da IBM<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>O scareware \u00e9 uma t\u00e9cnica de engenharia social cujo objetivo \u00e9 assustar a v\u00edtima, fazendo-a acreditar que o seu dispositivo est\u00e1 infectado e que a \u00fanica solu\u00e7\u00e3o \u00e9 baixar um software espec\u00edfico. Assim como outras formas de engenharia social, esta t\u00e9cnica tem como base a manipula\u00e7\u00e3o de emo\u00e7\u00f5es humanas. Neste artigo, explicamos o que \u00e9 scareware, como ele funciona e as 6 melhores maneiras de se defender contra esta amea\u00e7a.<\/p>\n","protected":false},"author":43,"featured_media":64015,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1379],"tags":[],"class_list":["post-64013","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seguranca-de-email"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Engenharia social: O que \u00e9 Scareware | Mailfence Blog<\/title>\n<meta name=\"description\" content=\"Descubra o que \u00e9 scareware, como ele manipula os usu\u00e1rios por meio de t\u00e1ticas de medo e aprenda estrat\u00e9gias para se proteger.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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