{"id":21163,"date":"2020-01-11T05:55:13","date_gmt":"2020-01-11T10:55:13","guid":{"rendered":"https:\/\/blogs.funiber.org\/pt\/?p=21163"},"modified":"2020-01-09T06:24:04","modified_gmt":"2020-01-09T11:24:04","slug":"funiber-assistentes-vulneraveis","status":"publish","type":"post","link":"https:\/\/www.funiber.blog\/pt\/tecnologias-tic\/2020\/01\/11\/funiber-assistentes-vulneraveis","title":{"rendered":"Assistentes de voz vulner\u00e1veis a laser"},"content":{"rendered":"<h2><strong>Os especialistas em seguran\u00e7a cibern\u00e9tica alertam os usu\u00e1rios dos assistentes de voz do Google, Alexa e Siri sobre os riscos de hackers<\/strong><\/h2>\n<p>Um grupo de pesquisadores da Universidade de Electro-Comunica\u00e7\u00f5es em T\u00f3quio e da Universidade de Michigan (Estados Unidos) descobriram uma nova vulnerabilidade dos assistentes de voz.<!--more--><\/p>\n<p>Especificamente, descobriu-se recentemente que \u00e9 poss\u00edvel controlar os assistentes de voz do Amazon Alexa, Google Assistant ou Siri da Apple &#8220;usando um laser que pode estar localizado a mais de 100 metros do dispositivo&#8221;, disseram eles em relat\u00f3rio divulgado no m\u00eas passado de novembro. Essa falha \u00e9 conhecida pelo nome de &#8220;Light Commands&#8221;.<\/p>\n<p>\u201cMicrofones convertem som em sinais el\u00e9tricos. A principal descoberta por tr\u00e1s dos comandos da luz \u00e9 que, al\u00e9m do som, os microfones tamb\u00e9m reagem \u00e0 luz direcionada diretamente a eles. Portanto, modulando um sinal el\u00e9trico na intensidade de um feixe de luz, os atacantes podem induzir microfones a produzir sinais el\u00e9tricos como se estivessem recebendo \u00e1udio genu\u00edno\u201d, alertam eles no <a href=\"https:\/\/lightcommands.com\/\">site<\/a> da pesquisa.<\/p>\n<p>Al\u00e9m disso, depois de superar o sistema de seguran\u00e7a, os usos feitos pelos criminosos cibern\u00e9ticos s\u00e3o infinitos: &#8220;Depois que um invasor ganha controle sobre um assistente de voz, ele pode us\u00e1-lo para quebrar outros sistemas&#8221;. Eles podem, por exemplo, fazer compras, desbloquear e iniciar ve\u00edculos remotamente etc.<\/p>\n<p>A FUNIBER patrocina uma ampla variedade de programas universit\u00e1rios focados em enfrentar os diferentes desafios que a tecnologia atualmente apresenta e sua prote\u00e7\u00e3o at\u00e9 ent\u00e3o ineficaz contra hackers. Um dos cursos oferecidos \u00e9 o <a href=\"https:\/\/www.funiber.org\/maestria-en-transformacion-digital\">Mestrado em Transforma\u00e7\u00e3o Digital.<\/a><\/p>\n<p>Fonte: <a href=\"https:\/\/www.lavanguardia.com\/tecnologia\/20191111\/471516639668\/aparta-asistente-voz-ventana-evitar-hackeos.html\">Aparta tu asistente de voz de la ventana si no quieres que te lo hackeen<\/a>.<\/p>\n<p>Estudo: <a href=\"https:\/\/lightcommands.com\/20191104-Light-Commands.pdf\">Light Commands: Laser-Based Audio Injection<\/a>.<\/p>\n<p>Foto: Todos os direitos reservados.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Os especialistas em seguran\u00e7a cibern\u00e9tica alertam os usu\u00e1rios dos assistentes de voz do Google, Alexa e Siri sobre os riscos de hackers Um grupo de pesquisadores da Universidade de Electro-Comunica\u00e7\u00f5es em T\u00f3quio e da Universidade de Michigan (Estados Unidos) descobriram uma nova vulnerabilidade dos assistentes de voz.<\/p>\n","protected":false},"author":10,"featured_media":21164,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_newsletter_tier_id":0,"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[6],"tags":[],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - 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