{"id":10416,"date":"2023-01-02T15:34:13","date_gmt":"2023-01-02T15:34:13","guid":{"rendered":"https:\/\/www.planhub.ca\/blog\/?p=10416"},"modified":"2023-01-02T15:34:13","modified_gmt":"2023-01-02T15:34:13","slug":"une-faille-permet-decouter-une-conversation-en-se-servant-des-ondes-vocales-recueillies-par-laccelerometre","status":"publish","type":"post","link":"https:\/\/www.planhub.ca\/blog\/fr\/une-faille-permet-decouter-une-conversation-en-se-servant-des-ondes-vocales-recueillies-par-laccelerometre\/","title":{"rendered":"Une faille permet d\u2019\u00e9couter une conversation en se servant des ondes vocales recueillies par l\u2019acc\u00e9l\u00e9rom\u00e8tre"},"content":{"rendered":"<p><strong>Avec des fonctionnalit\u00e9s qui ne cessent de s\u2019am\u00e9liorer, les capteurs des t\u00e9l\u00e9phones actuels peuvent servir \u00e0 d\u2019autres taches y compris espionner leurs utilisateurs.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Des chercheurs en s\u00e9curit\u00e9 de plusieurs universit\u00e9s am\u00e9ricaines ont d\u00e9couvert une faille plut\u00f4t inqui\u00e9tante sous Android comme le rapporte <a href=\"https:\/\/www.securityweek.com\/earspy-spying-phone-calls-ear-speaker-vibrations-captured-accelerometer\">Security Week<\/a>. Ils ont ainsi pu exploiter une faille de s\u00e9curit\u00e9 pour capter la conversation dans le haut-parleur sup\u00e9rieur du t\u00e9l\u00e9phone, via l\u2019acc\u00e9l\u00e9rom\u00e8tre, celui-l\u00e0 m\u00eame dont vous vous servez pour \u00e9couter votre interlocuteur. L\u2019attaque a \u00e9t\u00e9 men\u00e9e sur deux t\u00e9l\u00e9phones Android OnePlus 7T et OnePlus 9, mais elle ne concernerait que les t\u00e9l\u00e9phones sous Android, iOS est donc \u00e9pargn\u00e9 pour l\u2019instant.<\/p>\n<p>Afin de parvenir \u00e0 leur but, les chercheurs ont utilis\u00e9 l\u2019autorisation accord\u00e9e aux applications et leur permettant d\u2019acc\u00e9der \u00e0 l\u2019acc\u00e9l\u00e9rom\u00e8tre du t\u00e9l\u00e9phone afin d\u2019en d\u00e9tourner la fonction. Il a alors \u00e9t\u00e9 possible de capter les vibrations \u00e9mises par le haut-parleur afin de retranscrire plusieurs \u00e9l\u00e9ments de la voix permettant ainsi d\u2019identifier son interlocuteur et son genre.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>L\u2019am\u00e9lioration des t\u00e9l\u00e9phones aide-t-elle les pirates ?<\/strong><\/p>\n<p>M\u00eame si la s\u00e9curit\u00e9 a \u00e9t\u00e9 le point faible d\u2019Android durant ses premi\u00e8res ann\u00e9es, Google a depuis investi dans ce domaine et restreint plusieurs autorisations aux d\u00e9veloppeurs comme l\u2019acc\u00e8s aux micros du t\u00e9l\u00e9phone. C\u2019est pour cette raison que les chercheurs se sont concentr\u00e9s sur la mani\u00e8re de d\u00e9tourner l\u2019acc\u00e9l\u00e9rom\u00e8tre, afin de v\u00e9rifier s\u2019il \u00e9tait possible d\u2019utiliser d\u2019autres fonctionnalit\u00e9s du t\u00e9l\u00e9phone.<\/p>\n<p>L\u2019\u00e9volution des capteurs qui gagnent en pr\u00e9cision chaque ann\u00e9e peut \u00eatre d\u2019une aide pr\u00e9cieuse pour les pirates. C\u2019est le cas de l\u2019acc\u00e9l\u00e9rom\u00e8tre, dont la sensibilit\u00e9 et la pr\u00e9cision permettent d\u00e9sormais de capteur les ondes \u00e9mises par la voix.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Une faille pour l\u2019instant limit\u00e9e<\/strong><\/p>\n<p>Bien que dangereuse, la port\u00e9e de cette faille reste pour l\u2019instant limit\u00e9e. D\u00e9nomm\u00e9e Earspy, elle permet de reconnaitre l\u2019interlocuteur dans 92% des cas, mais ne peut extraire que 58% de la conversation. Cependant, avec l\u2019am\u00e9lioration des capteurs, il est possible \u00e0 l\u2019avenir d&rsquo;am\u00e9liorer ses performances d&rsquo;\u00e9coute.<\/p>\n<p>Ce type de hack permettant d\u2019\u00e9couter une conversation en exploitant les ondes voire la lumi\u00e8re via un dispositif, est apparu il y a peu moins de 5 ans. Des chercheurs isra\u00e9liens ont ainsi mis au point en 2020 un syst\u00e8me permettant d\u2019<a href=\"https:\/\/www.i24news.tv\/fr\/actu\/israel\/1592725959-comment-espionner-une-conversation-en-regardant-une-ampoule-selon-des-chercheurs-israeliens-media\">\u00e9couter une conversation<\/a> en observant les variations d\u2019intensit\u00e9 produites par une ampoule sur laquelle se r\u00e9verb\u00e8re la voix au moyen d\u2019un simple ordinateur et d\u2019un t\u00e9lescope.<\/p>\n<p>Avec des capteurs qui ne cessent de gagner en pr\u00e9cision, il faut s\u2019attendre \u00e0 voir se d\u00e9velopper des hacks exploitant l\u2019acc\u00e9l\u00e9rom\u00e8tre ou d\u2019autres capteurs \u00e0 l\u2019avenir. La t\u00e9l\u00e9phonie est un domaine particuli\u00e8rement sensible, et dans les faits, un t\u00e9l\u00e9phone reste en r\u00e9alit\u00e9 un mini-ordinateur bourr\u00e9 de capteurs ultra-sensibles et qui contient en plus toutes nos donn\u00e9es personnelles.<\/p>\n<p><strong>Cr\u00e9dit Image couverture : Samsung<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avec des fonctionnalit\u00e9s qui ne cessent de s\u2019am\u00e9liorer, les capteurs des t\u00e9l\u00e9phones actuels peuvent servir \u00e0 d\u2019autres taches y compris espionner leurs utilisateurs. &nbsp; Des chercheurs en s\u00e9curit\u00e9 de plusieurs universit\u00e9s am\u00e9ricaines ont d\u00e9couvert une faille plut\u00f4t inqui\u00e9tante sous Android comme le rapporte Security Week. Ils ont ainsi pu exploiter une faille de s\u00e9curit\u00e9 pour [&hellip;]<\/p>\n","protected":false},"author":32,"featured_media":10165,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[835],"tags":[],"class_list":["post-10416","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mobile-news-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Une faille permet d\u2019\u00e9couter une conversation en se servant des ondes vocales recueillies par l\u2019acc\u00e9l\u00e9rom\u00e8tre | PlanHub.ca<\/title>\n<meta name=\"description\" content=\"Des chercheurs en s\u00e9curit\u00e9 de plusieurs universit\u00e9s am\u00e9ricaines ont d\u00e9couvert une faille plut\u00f4t inqui\u00e9tante permettant d&#039;\u00e9couter une conversation en se servant 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