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</li> <li class=""><a href="#History-of-Trojans">Hist贸rico do v铆rus cavalo de Troia</a> </li> <li class=""><a href="#Types-of-Trojans">Quais s茫o os diferentes tipos de cavalos de Troia?</a> </li> <li class=""><a href="#Trojanized-apps-on-Android-smartphones">Aplicativos trojanizados em smartphones Android</a> </li> <li class=""><a href="#How-do-you-remove-a-Trojan">Como fa莽o para remover um v铆rus Trojan?</a> </li> <li class=""><a href="#How-do-I-prevent-Trojans">Como posso evitar um v铆rus Trojan?</a> </li> <li class=""><a href="#How-Malwarebytes-Premium-protects-you">Como o site Malwarebytes Premium protege voc锚</a> </li> </ul> <div class="left-sidebar-menu-wrap"> <section id="block-17" class="widget widget_block"> <div class="container"> <div id="pillar-page-product-list"> <p><strong>Artigos recentes</strong></p> <div id="nav-home-products-list"> <a href="https://www.malwarebytes.com/pt-br/cybersecurity/basics/brute-force-attack" 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col-restyling"> <figure class="wp-block-image aligncenter size-full"><img src="https://www.malwarebytes.com/wp-content/uploads/sites/2/2023/08/trojan-header-image.png" alt="imagem do cabe莽alho do trojan" /></figure> <h2 class="wp-block-heading" id="What-is-a-Trojan">O que 茅 um cavalo de Troia?聽</h2> <p>Cuidado com os gregos que trazem presentes: No poema 茅pico de Virg铆lio, <em>A Eneida</em>, um inteligente estrategista de guerra grego chamado Odisseu elabora um plano para levar seus homens para dentro da cidade murada de Troia. Em vez de destruir ou escalar as muralhas da cidade, Odisseu v锚 outra maneira de entrar: por meio do engano. Os soldados troianos observam enquanto os gregos parecem se afastar, deixando para tr谩s um cavalo de madeira gigante como sinal de rendi莽茫o. Embriagados pela vit贸ria, os troianos levam o cavalo para dentro de suas muralhas, apenas para descobrir que Odisseu e seus homens estavam escondidos l谩 dentro o tempo todo.</p> <p>Assim como seu hom么nimo, os ataques de cavalos de Troia (ou simplesmente "cavalos de Troia") em computa莽茫o s茫o definidos como um tipo de malware que usa engano e <a href="https://www.malwarebytes.com/pt-br/social-engineering">engenharia social</a> para enganar usu谩rios desavisados e faz锚-los executar programas de computador aparentemente benignos que escondem segundas inten莽玫es maliciosas. Embora tecnicamente eles n茫o sejam <a href="https://www.malwarebytes.com/pt-br/computer-virus">v铆rus de computador</a>, mas sim uma forma separada de malware, "v铆rus cavalo de Troia" tornou-se uma forma comum de se referir a eles.聽</p> <h2 class="wp-block-heading" id="How-to-characterize-a-Trojan">Como caracterizar um cavalo de Troia</h2> <p>脌s vezes, as pessoas pensam em um cavalo de Troia como um v铆rus ou um worm, mas na verdade n茫o 茅 nenhum deles. Um <a href="https://www.malwarebytes.com/pt-br/computer-virus">v铆rus</a> 茅 um infectador de arquivos que pode se autorreplicar e se espalhar anexando-se a outro programa. Os worms s茫o um tipo de malware semelhante aos v铆rus, mas n茫o precisam ser anexados a outro programa para se espalhar. Atualmente, a maioria dos v铆rus 茅 vista como amea莽as legadas. Os worms tamb茅m se tornaram raros, embora apare莽am de vez em quando.聽</p> <blockquote class="wp-block-quote is-style-default is-layout-flow wp-block-quote-is-layout-flow"> <p>"Um Trojan pode ser como um canivete su铆莽o de hacking".</p> </blockquote> <p>Pense nos cavalos de Troia como um termo gen茅rico para o fornecimento de <a href="https://www.malwarebytes.com/pt-br/malware">malware </a>, pois h谩 v谩rios tipos de cavalos de Troia. Dependendo da inten莽茫o do programador criminoso, um cavalo de Troia pode ser como um canivete su铆莽o do <a href="https://www.malwarebytes.com/pt-br/hacker">hacking, atuando</a>como um malware aut么nomo ou como uma ferramenta para outras atividades, como o fornecimento de futuras cargas 煤teis, a comunica莽茫o com o hacker em um momento posterior ou a abertura do sistema para ataques, assim como os soldados gregos fizeram de dentro da fortaleza de Troia.</p> <p>Em outras palavras, um cavalo de Troia 茅 uma estrat茅gia de entrega que os hackers usam para entregar qualquer n煤mero de amea莽as, desde ransomware que exige dinheiro imediatamente at茅 spyware que se oculta enquanto rouba informa莽玫es valiosas, como dados pessoais e financeiros.</p> <p>Lembre-se de que <a href="https://www.malwarebytes.com/pt-br/adware">adware</a> ou <a href="https://www.malwarebytes.com/blog/101/2016/02/how-to-avoid-potentially-unwanted-programs/">PUPs</a> (programas potencialmente indesejados) podem ser confundidos com cavalos de Troia porque o m茅todo de entrega 茅 semelhante. Por exemplo, 脿s vezes o adware entra sorrateiramente em seu computador como parte de um pacote de software. Voc锚 acha que est谩 baixando um software, mas na verdade s茫o dois ou tr锚s. Os autores do programa geralmente incluem o adware por motivos de marketing de afiliados, para que possam monetizar o instalador com ofertas - geralmente claramente identificadas. Esses empacotadores de adware s茫o normalmente menos mal-intencionados do que os cavalos de Troia. Al茅m disso, eles n茫o se ocultam como fazem os cavalos de Troia. Mas como o vetor de distribui莽茫o do adware se assemelha ao de um cavalo de Troia, ele pode causar confus茫o.</p> <h2 class="wp-block-heading" id="Trojan-infection-methods">Sintomas do v铆rus Trojan</h2> <p>Os cavalos de Troia podem se parecer com praticamente qualquer coisa, desde software e m煤sica gratuitos at茅 an煤ncios de navegador e aplicativos aparentemente leg铆timos. Qualquer comportamento imprudente do usu谩rio pode levar a uma infec莽茫o por cavalos de Troia. Aqui est茫o alguns exemplos:</p> <ul> <li>Download de aplicativos crackeados. A promessa de uma c贸pia gratuita ilegal de um software pode ser atraente, mas o software crackeado ou o gerador de chave de ativa莽茫o pode ocultar um ataque de Trojan.</li> <li>Download de programas gratuitos desconhecidos. O que parece ser um jogo ou um protetor de tela gratuito pode, na verdade, ser um cavalo de Troia, especialmente se for encontrado em um site n茫o confi谩vel.</li> <li>Abertura de anexos infectados. Voc锚 recebe um e-mail estranho com o que parece ser um anexo importante, como uma fatura ou um recibo de entrega, mas que lan莽a um cavalo de Troia quando voc锚 clica nele.</li> <li>Visitar sites obscuros. Alguns sites precisam apenas de um momento para infectar seu computador. Outros usam truques como fingir transmitir um filme popular, mas somente se voc锚 baixar um determinado codec de v铆deo, que na verdade 茅 um cavalo de Troia.</li> <li>Qualquer outra engenharia social que se disfarce aproveitando as 煤ltimas tend锚ncias. Por exemplo, em dezembro de 2017, descobriu-se que uma extensa base instalada de processadores Intel estava vulner谩vel a ataques devido a problemas de hardware. Os hackers aproveitaram o p芒nico que se seguiu para falsificar um patch chamado <a href="https://www.malwarebytes.com/blog/cybercrime/2018/01/fake-spectre-and-meltdown-patch-pushes-smoke-loader/">Smoke Loader</a>, que instalava um cavalo de Troia.</li> </ul> <h2 class="wp-block-heading" id="Latest-Trojan-news">Not铆cias sobre cavalos de Troia</h2> <ul> <li><a href="https://www.malwarebytes.com/blog/trojans/2021/11/sharkbot-android-banking-trojan-cleans-users-out/">SharkBot Android banking Trojan limpa os usu谩rios</a></li> <li><a href="https://www.malwarebytes.com/blog/exploits-and-vulnerabilities/2021/11/trojan-source-hiding-malicious-code-in-plain-sight/">Fonte de Trojan: Oculta莽茫o de c贸digo malicioso 脿 vista de todos</a></li> <li><a href="https://www.malwarebytes.com/blog/awareness/2021/06/polazert-trojan-using-poisoned-google-search-results-to-spread/">O Trojan Polazert usa resultados envenenados da Pesquisa Google para se espalhar</a></li> <li><a href="https://www.malwarebytes.com/blog/cybercrime/malware/2021/05/bizarro-a-banking-trojan-full-of-nasty-tricks/">Bizarro: um cavalo de Troia banc谩rio cheio de truques desagrad谩veis</a></li> <li><a href="https://www.malwarebytes.com/blog/android/2020/02/new-variant-of-android-trojan-xhelper-reinfects-with-help-from-google-play/">Android O Trojan xHelper usa t谩ticas de reinfec莽茫o persistentes: veja como remov锚-lo</a></li> <li><a href="https://www.malwarebytes.com/blog/threat-analysis/2019/12/new-version-of-icedid-trojan-uses-steganographic-payloads/">Nova vers茫o do Trojan IcedID usa cargas 煤teis esteganogr谩ficas</a></li> <li><a href="https://www.malwarebytes.com/blog/cybercrime/2017/11/new-trojan-malware-discovered-google-play/">Novo malware Android Trojan descoberto no Google Play</a></li> <li><a href="https://www.malwarebytes.com/blog/cybercrime/2018/07/trojans-whats-the-real-deal/">Trojans: Qual 茅 o verdadeiro problema?</a></li> </ul> <h2 class="wp-block-heading" id="History-of-Trojans">Hist贸rico do v铆rus cavalo de Troia</h2> <h3 class="wp-block-heading">Divers茫o e jogos</h3> <p>Um programa chamado ANIMAL, lan莽ado em 1975, 茅 geralmente considerado o primeiro exemplo mundial de um ataque de Trojan. Ele se apresentava como um jogo simples do tipo vinte perguntas. Entretanto, nos bastidores, o jogo se copiava em diret贸rios compartilhados onde outros usu谩rios poderiam encontr谩-lo. A partir da铆, o jogo poderia se espalhar por todo o computador. A partir da铆, o jogo podia se espalhar por redes de computadores inteiras. Na maioria das vezes, era uma brincadeira inofensiva.</p> <p>Em dezembro de 1989, os ataques de cavalos de Troia n茫o eram mais para brincadeiras. V谩rios milhares de disquetes contendo o Cavalo de Troia AIDS, o primeiro ransomware conhecido, foram enviados por correio para assinantes da revista <em>PC Business World</em> e para uma lista de correspond锚ncia da confer锚ncia sobre AIDS da Organiza莽茫o Mundial da Sa煤de. Esse cavalo de Troia DOS ficava inativo por 90 ciclos de inicializa莽茫o, criptografava todos os nomes de arquivos do sistema e, em seguida, exibia um aviso solicitando que o usu谩rio enviasse US$ 189 para uma caixa postal no Panam谩 para receber um programa de descriptografia.</p> <p>Na d茅cada de 1990, outro Trojan infame apareceu disfar莽ado na forma de um simples jogo Whack-A-Mole. O programa escondia uma vers茫o do <a href="https://www.techopedia.com/definition/4026/netbus">NetBus</a>, um programa que permite controlar remotamente um sistema de computador Microsoft Windows por meio de uma rede. Com o acesso remoto, o invasor poderia fazer v谩rias coisas em um computador, at茅 mesmo abrir sua bandeja de CD.</p> <h3 class="wp-block-heading">Amor e dinheiro</h3> <p>Em 2000, um cavalo de Troia chamado <a href="https://www.malwarebytes.com/blog/security-world/2015/07/iloveyou-spam/">ILOVEYOU</a> tornou-se o ataque cibern茅tico mais destrutivo da hist贸ria na 茅poca, com danos estimados em at茅 US$ 8,7 bilh玫es. Os destinat谩rios recebiam um e-mail com o que parecia ser um anexo de texto chamado "ILOVEYOU". Se eles tivessem a curiosidade de abri-lo, o programa iniciaria um script que sobrescreveria seus arquivos e se enviaria para todos os e-mails da lista de contatos do usu谩rio. Por mais inteligente que o worm fosse do ponto de vista t茅cnico, o uso da engenharia social era, sem d煤vida, seu componente mais engenhoso.</p> <p>Durante a d茅cada de 2000, os ataques de cavalos de Troia continuaram a evoluir, assim como as amea莽as que eles carregavam. Em vez de visar a curiosidade das pessoas, os cavalos de Troia aproveitaram o aumento do download ilegal, disfar莽ando o malware como arquivos de m煤sica, filmes ou codecs de v铆deo. Em 2002, surgiu um cavalo de Troia backdoor baseado no Windows chamado Beast, capaz de infectar quase todas as vers玫es do Windows. Em seguida, no final de 2005, outro cavalo de Troia <a href="https://www.malwarebytes.com/blog/glossary/backdoor/">backdoor</a> chamado Zlob foi distribu铆do disfar莽ado como um codec de v铆deo necess谩rio na forma de ActiveX.</p> <p>Os anos 2000 tamb茅m viram um aumento no n煤mero de usu谩rios do Mac e os criminosos cibern茅ticos seguiram o exemplo. Em 2006, foi anunciada a descoberta do primeiro <a href="https://www.malwarebytes.com/pt-br/mac-antivirus/">malware para o Mac</a> OS X, um cavalo de Troia de baixa amea莽a conhecido como OSX/Leap-A ou OSX/Oompa-A.</p> <p>As motiva莽玫es por tr谩s dos ataques de cavalos de Troia tamb茅m come莽aram a mudar nessa 茅poca. Muitos dos primeiros ataques cibern茅ticos eram motivados pelo desejo de poder, controle ou pura destrui莽茫o. Na d茅cada de 2000, um n煤mero cada vez maior de ataques era motivado pela gan芒ncia. Em 2007, um cavalo de Troia chamado Zeus visava a Microsoft Windows para roubar informa莽玫es banc谩rias por meio de um <a href="https://www.malwarebytes.com/pt-br/keylogger">keylogger</a>. Em 2008, os hackers lan莽aram o Torpig, tamb茅m conhecido como Sinowal e Mebroot, que desativava os aplicativos antiv铆rus, permitindo que outras pessoas acessassem o computador, modificassem dados e roubassem informa莽玫es confidenciais, como senhas e outros dados sigilosos.</p> <h3 class="wp-block-heading">Maior e pior</h3> <p>Quando o crime cibern茅tico entrou na d茅cada de 2010, a gan芒ncia continuou, mas os hackers come莽aram a pensar mais alto. O aumento de criptomoedas n茫o rastre谩veis, como o Bitcoin, levou a um aumento nos ataques de ransomware. Em 2013, o <a href="https://www.malwarebytes.com/blog/101/2013/10/cryptolocker-ransomware-what-you-need-to-know/">cavalo de Troia Cryptolocker</a> foi descoberto. O Cryptolocker criptografa os arquivos no disco r铆gido do usu谩rio e exige o pagamento de um resgate ao desenvolvedor para receber a chave de descriptografia. Mais tarde, no mesmo ano, v谩rios cavalos de Troia imitadores de ransomware tamb茅m foram descobertos.</p> <blockquote class="wp-block-quote is-style-default is-layout-flow wp-block-quote-is-layout-flow"> <p>"Muitos dos cavalos de Troia de que ouvimos falar hoje foram projetados para atingir uma empresa, uma organiza莽茫o ou at茅 mesmo um governo espec铆fico."</p> </blockquote> <p>A d茅cada de 2010 tamb茅m registrou uma mudan莽a na forma como as v铆timas s茫o visadas. Embora muitos cavalos de Troia ainda usem uma abordagem geral, tentando infectar o maior n煤mero poss铆vel de usu谩rios, uma abordagem mais direcionada parece estar em ascens茫o. Muitos dos cavalos de Troia de que ouvimos falar hoje foram projetados para atingir uma empresa, uma organiza莽茫o ou at茅 mesmo um governo espec铆fico. Em 2010, <a href="https://en.wikipedia.org/wiki/Stuxnet">o Stuxnet</a>, um cavalo de Troia Windows , foi detectado. Foi o primeiro worm a atacar sistemas de controle computadorizados, e h谩 sugest玫es de que tenha sido projetado para atingir instala莽玫es nucleares iranianas. Em 2016, o <a href="https://www.malwarebytes.com/blog/threat-analysis/2015/06/elusive-hanjuan-ek-caught-in-new-malvertising-campaign/">Tiny Banker Trojan</a> (Tinba) ganhou as manchetes. Desde sua descoberta, descobriu-se que ele infectou mais de duas d煤zias de grandes institui莽玫es banc谩rias nos Estados Unidos, incluindo TD Bank, Chase, HSBC, Wells Fargo, PNC e Bank of America. Em 2018, o cavalo de Troia <a href="https://www.malwarebytes.com/pt-br/emotet">Emotet</a>, que j谩 foi um cavalo de Troia banc谩rio por si s贸, foi visto entregando outros tipos de malware, incluindo outros cavalos de Troia.</p> <p>Como uma das formas mais antigas e mais comuns de distribui莽茫o de malware, a hist贸ria dos cavalos de Troia acompanha a hist贸ria do pr贸prio crime cibern茅tico. O que come莽ou como uma forma de pregar pe莽as nos amigos se transformou em uma maneira de destruir redes, roubar informa莽玫es, ganhar dinheiro e tomar o poder. Os dias de pegadinhas j谩 se foram h谩 muito tempo. Em vez disso, elas continuam a ser ferramentas s茅rias do crime cibern茅tico, usadas principalmente para roubo de dados, espionagem e <a href="https://www.malwarebytes.com/pt-br/ddos">ataques de nega莽茫o de servi莽o distribu铆do (DDoS)</a>.</p> <h2 class="wp-block-heading" id="Types-of-Trojans">Quais s茫o os diferentes tipos de cavalos de Troia?</h2> <p>Os cavalos de Troia s茫o vers谩teis e muito populares, por isso 茅 dif铆cil caracterizar cada tipo. Dito isso, a maioria dos cavalos de Troia 茅 projetada para assumir o controle do computador do usu谩rio, roubar dados, espionar usu谩rios ou inserir mais malware no computador da v铆tima. Aqui est茫o algumas amea莽as comuns provenientes de ataques de cavalos de Troia:</p> <ul> <li><a href="https://www.malwarebytes.com/blog/detections/backdoor/">Backdoors</a>, que criam acesso remoto ao seu sistema. Esse tipo de malware altera sua seguran莽a para permitir que o hacker controle o dispositivo, roube seus dados e at茅 mesmo fa莽a download de mais malware.</li> <li><a href="https://www.malwarebytes.com/pt-br/spyware">Spyware</a>, que observa enquanto voc锚 acessa contas on-line ou digita os detalhes do seu cart茫o de cr茅dito. Em seguida, eles transmitem suas senhas e outros dados de identifica莽茫o para o hacker.</li> <li>Trojans zumbificadores, que assumem o controle do seu computador para torn谩-lo um escravo em uma rede sob o controle do hacker. Essa 茅 a primeira etapa na cria莽茫o de um botnet (rob么 + rede), que geralmente 茅 usado para realizar um ataque de nega莽茫o de servi莽o distribu铆do (DDoS) projetado para derrubar uma rede inundando-a com tr谩fego.</li> <li>Os cavalos de Troia <a href="https://www.malwarebytes.com/blog/glossary/downloader/">de download</a>, sendo o Emotet um bom exemplo, baixam e implantam outros m贸dulos mal-intencionados, como <a href="https://www.malwarebytes.com/pt-br/ransomware">ransomware</a> ou keyloggers.</li> <li>Dialer Trojans, o que pode parecer anacr么nico, j谩 que n茫o usamos mais modems dial-up. Mas falaremos mais sobre isso na pr贸xima se莽茫o.</li> </ul> <h2 class="wp-block-heading" id="Trojanized-apps-on-Android-smartphones">Aplicativos trojanizados em smartphones Android</h2> <p>Os cavalos de Troia n茫o s茫o um problema apenas para laptops e desktops. Eles tamb茅m atacam <a href="https://www.malwarebytes.com/blog/cybercrime/2017/12/lo-lo-lo-lo-loapi-we-have-you-protected/">dispositivos m贸veis</a>, o que faz sentido, dado o alvo tentador apresentado pelos bilh玫es de telefones em uso.</p> <p>Assim como nos computadores, o cavalo de Troia se apresenta como um programa leg铆timo, embora seja, na verdade, uma vers茫o falsa do aplicativo repleta de malware.</p> <p>Esses cavalos de Troia geralmente se escondem em mercados de aplicativos n茫o oficiais e piratas, atraindo os usu谩rios a baix谩-los. Os cavalos de Troia realizam toda a gama de maldades, infectando o telefone com an煤ncios e keyloggers, que podem roubar informa莽玫es. Os cavalos de Troia discadores podem at茅 gerar receita enviando textos SMS premium. 聽聽聽</p> <blockquote class="wp-block-quote is-style-default is-layout-flow wp-block-quote-is-layout-flow"> <p>"Os complementos de extens茫o do navegador podem atuar como cavalos de Troia, bem como...."</p> </blockquote> <p>Android Os usu谩rios t锚m sido <a href="https://www.malwarebytes.com/blog/cybercrime/2017/11/new-trojan-malware-discovered-google-play/">v铆timas de aplicativos trojanizados</a> at茅 mesmo do Google Play, que est谩 constantemente verificando e eliminando aplicativos armados (muitas vezes ap贸s a descoberta do trojan). Os complementos de extens茫o de navegador tamb茅m podem atuar como cavalos de Troia, pois s茫o uma carga 煤til capaz de transportar c贸digos maliciosos incorporados.</p> <p>Embora o Google possa remover os complementos do navegador dos computadores, nos telefones os cavalos de Troia podem colocar 铆cones transparentes na tela. Ele 茅 invis铆vel para o usu谩rio, mas reage ao toque de um dedo para iniciar o malware.</p> <p>Quanto aos usu谩rios do iPhone, h谩 boas not铆cias: As pol铆ticas restritivas da Apple em rela莽茫o ao acesso 脿 App Store, iOS e a quaisquer outros aplicativos no telefone fazem um bom trabalho para evitar incurs玫es de cavalos de Troia. A 煤nica exce莽茫o ocorre para aqueles que fazem <a href="https://en.wikipedia.org/wiki/IOS_jailbreaking">o jailbreak</a> de seus telefones na tentativa de baixar aplicativos gratuitos de outros sites que n茫o a App Store. A instala莽茫o de aplicativos de risco fora das configura莽玫es da Apple o torna vulner谩vel a cavalos de Troia.</p> <h2 class="wp-block-heading" id="How-do-you-remove-a-Trojan">Como fa莽o para remover um v铆rus Trojan?</h2> <p>Quando um cavalo de Troia infecta seu dispositivo, a maneira mais universal de limp谩-lo e restaur谩-lo ao estado desejado 茅 usar uma ferramenta antimalware automatizada e de boa qualidade e fazer uma verifica莽茫o completa do sistema. Se estiver preocupado com uma infec莽茫o por cavalos de Troia, experimente nosso <a href="https://www.malwarebytes.com/pt-br/solutions/trojan-scanner">verificador de cavalos de Troia gratuito</a> para verificar seu dispositivo.聽</p> <p>H谩 muitos programas <a href="https://www.malwarebytes.com/pt-br/solutions/free-antivirus">antiv铆rus</a> e antimalware <a href="https://www.malwarebytes.com/pt-br/solutions/free-antivirus">gratuitos</a> - inclusive nossos pr贸prios produtos para Windows, Android e Mac- que detectam e removem adware e malware. De fato, o Malwarebytes detecta todos os cavalos de Troia conhecidos e muito mais, pois 80% da detec莽茫o de cavalos de Troia 茅 feita por an谩lise heur铆stica. Ajudamos at茅 mesmo a reduzir infec莽玫es adicionais, cortando a comunica莽茫o entre o malware inserido e qualquer servidor de back-end, o que isola o cavalo de Troia. Nossa ferramenta gratuita de malware examinar谩 e remover谩 o malware existente, e nosso produto premium examinar谩 e proteger谩 proativamente contra malware como cavalos de Troia, v铆rus, <a href="https://www.malwarebytes.com/pt-br/computer-worm">worms</a> e ransomware. Voc锚 pode come莽ar com uma <a href="https://www.malwarebytes.com/pt-br/mwb-download">avalia莽茫o gratuita</a> de nossos produtos premium para test谩-los por si mesmo.聽聽聽</p> <h2 class="wp-block-heading" id="How-do-I-prevent-Trojans">Como posso evitar um v铆rus Trojan?</h2> <p>Como os cavalos de Troia dependem de enganar os usu谩rios para que eles entrem no computador, a maioria das infec莽玫es pode ser evitada mantendo-se vigilante e observando bons h谩bitos de seguran莽a. Pratique um ceticismo saud谩vel em rela莽茫o a sites que oferecem filmes ou jogos de azar gratuitos e, em vez disso, opte por fazer o download de programas gratuitos diretamente do site do produtor e n茫o de <a href="https://en.wikipedia.org/wiki/Server_(computing)">servidores</a> espelho n茫o autorizados.</p> <p>Outra precau莽茫o a ser considerada: altere as configura莽玫es padr茫o do site Windows para que as extens玫es reais dos aplicativos estejam sempre vis铆veis. Isso evita que voc锚 seja enganado por um 铆cone de apar锚ncia inocente.</p> <p>Outras boas pr谩ticas al茅m de instalar <a href="https://www.malwarebytes.com/pt-br/premium/">Malwarebytes para Windows</a>, <a href="https://www.malwarebytes.com/pt-br/android/">Malwarebytes para Android</a> e <a href="https://www.malwarebytes.com/pt-br/mac/">Malwarebytes para Mac</a> incluem:</p> <ul> <li>Execu莽茫o de varreduras de diagn贸stico peri贸dicas</li> <li>Configura莽茫o de atualiza莽玫es autom谩ticas do software do seu sistema operacional, garantindo que voc锚 tenha as atualiza莽玫es de seguran莽a mais recentes</li> <li>Manter seus aplicativos atualizados, garantindo que todas as vulnerabilidades de seguran莽a sejam corrigidas</li> <li>Evitar sites inseguros ou suspeitos</li> <li>Ser c茅tico em rela莽茫o a anexos e links n茫o verificados em e-mails desconhecidos</li> <li>Uso de senhas complexas</li> <li>Ficar atr谩s de um firewall</li> </ul> <h2 class="wp-block-heading" id="How-Malwarebytes-Premium-protects-you">Como o site Malwarebytes Premium protege voc锚</h2> <p>Em Malwarebytes, levamos a s茅rio a preven莽茫o de infec莽玫es, e 茅 por isso que bloqueamos agressivamente sites e an煤ncios que consideramos fraudulentos ou suspeitos. Por exemplo, bloqueamos sites <a href="https://en.wikipedia.org/wiki/Torrent_file">de torrent</a> como o The Pirate Bay. Embora muitos usu谩rios experientes tenham usado esses sites sem problemas, alguns dos arquivos que eles oferecem para download s茫o, na verdade, cavalos de Troia. Por motivos semelhantes, tamb茅m bloqueamos a <a href="https://www.malwarebytes.com/pt-br/cryptojacking/">criptominera莽茫o</a> por meio de navegadores, mas o usu谩rio pode optar por desativar o bloqueio e se conectar.</p> <p>Nosso racioc铆nio 茅 que 茅 melhor errar pelo lado da seguran莽a. Se voc锚 quiser correr o risco, 茅 f谩cil colocar um site na lista de permiss玫es, mas at茅 mesmo os especialistas em tecnologia podem cair em um cavalo de Troia convincente.</p> <p>Para saber mais sobre cavalos de Troia, malware e outras amea莽as cibern茅ticas, visite o <a href="https://www.malwarebytes.com/blog/">blogMalwarebytes Labs . 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