{"id":41654,"date":"2016-10-31T19:39:19","date_gmt":"2016-10-31T19:39:19","guid":{"rendered":"http:\/\/www.afrikmag.com\/?p=41654"},"modified":"2016-10-31T19:39:19","modified_gmt":"2016-10-31T19:39:19","slug":"technologie-communiquons-nous-en-securite-avec-les-messageries-instantanees","status":"publish","type":"post","link":"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/technologie-communiquons-nous-en-securite-avec-les-messageries-instantanees\/","title":{"rendered":"Technologie: Communiquons nous en s\u00e9curit\u00e9 avec les messageries instantan\u00e9es?"},"content":{"rendered":"
\n

Vos applications de messageries instantan\u00e9es pr\u00e9f\u00e9r\u00e9es WhatsApp, Facebook, Messenger sont elles s\u00e9curis\u00e9es? Communiquez vous en toute s\u00e9curit\u00e9?<\/p>\n

L’organisation Amnesty International a d\u00e9cid\u00e9 de se pencher sur la question et s\u2019est int\u00e9ress\u00e9e au chiffrement des donn\u00e9es \u00e9chang\u00e9es via les messageries instantan\u00e9es. Classement \u00e0 l\u2019appui, l\u2019ONG de d\u00e9fense des droits de l\u2019homme cherche \u00e0 savoir quelles sont celles qui prot\u00e8gent le plus les communications entre les utilisateurs.<\/p>\n<\/div>\n

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\u00ab\u00a0Nous ne conseillons pas aux gens d\u2019utiliser telle messagerie instantan\u00e9e plut\u00f4t que telle autre<\/i>\u00a0\u00bb, avertit Dominique Curis, charg\u00e9e de plaidoyer Libert\u00e9s chez Amnesty International. \u00ab\u00a0Il s\u2019agit surtout d\u2019informer les citoyens des pratiques des op\u00e9rateurs de messageries.<\/i>\u00a0\u00bb<\/p>\n

Le rapport de l\u2019ONG permet de\u00a0classer les onze op\u00e9rateurs de messagerie instantan\u00e9e test\u00e9s, en fonction de plusieurs crit\u00e8res\u00a0: le chiffrement des communications est-il activ\u00e9 par d\u00e9faut\u00a0? Les utilisateurs sont-ils bien inform\u00e9s\u00a0du fonctionnement du chiffrement\u00a0? Les gouvernements ont-ils acc\u00e8s aux donn\u00e9es \u00e9chang\u00e9es\u00a0? Etc.<\/p>\n

Sur le podium\u00a0: Facebook<\/strong>, Apple et Telegram. Facebook (73 points sur 100) profite du bon score de l\u2019application WhatsApp, qu\u2019il a rachet\u00e9e en f\u00e9vrier 2014. iMessage rapporte des points \u00e0 Apple, qui obtient le m\u00eame score que Telegram (67\/100), une application lanc\u00e9e par deux fr\u00e8res russes qui ont fait de la s\u00e9curit\u00e9 des \u00e9changes leur cheval de bataille.<\/p>\n

Selon l\u2019ONG, toutes les entreprises n\u2019ont pas \u00e9t\u00e9 tr\u00e8s coop\u00e9ratives dans la r\u00e9daction du document\u00a0: BlackBerry, Google et Tencent (op\u00e9rateur chinois qui poss\u00e8de QQ et WeChat) n\u2019ont ainsi jamais r\u00e9pondu aux courriers de l\u2019ONG.<\/p>\n

\u00ab\u00a0Nous voulons dire aux entreprises \u00e9valu\u00e9es que nous surveillons ce qu\u2019elles font\u00a0<\/i><\/strong>\u00bb, explique Dominique Curis. Dans le collimateur d\u2019Amnesty, la relation entre ces entreprises et les \u00c9tats\u00a0: \u00ab\u00a0Nous souhaitons que les autorit\u00e9s arr\u00eatent de demander l\u2019acc\u00e8s aux communications des utilisateurs des messageries instantan\u00e9es<\/i>\u00a0\u00bb, d\u00e9taille la responsable d\u2019Amnesty. Officiellement, les entreprises refusent ces demandes \u2013 sauf Google, Facebook et Apple, dans le cas o\u00f9 l\u2019utilisateur est vis\u00e9 par une enqu\u00eate de justice. \u00ab\u00a0Mais en r\u00e9alit\u00e9, on est dans l\u2019incertitude<\/i>\u00a0\u00bb, d\u00e9plore Dominique Curis.<\/p>\n

Pour un \u00c9tat, il y a plusieurs moyens d\u2019obtenir un acc\u00e8s aux contenus des conversations. Soit il demande \u00e0 l\u2019entreprise la cr\u00e9ation d\u2019une \u00ab\u00a0backdoor\u00a0\u00bb (porte d\u00e9rob\u00e9e) dans l\u2019application, qui lui permet de voir ce qu\u2019il s\u2019y \u00e9change \u2013 parfois en faisant pression sur elle, par exemple gr\u00e2ce \u00e0 des taxes.<\/p>\n

Autre possibilit\u00e9 selon Benjamin Leroux, consultant en s\u00e9curit\u00e9 informatique\u00a0: \u00ab L\u2019\u00c9tat <\/i>utilise sa force de frappe technologique, c\u2019est-\u00e0-dire ses propres informaticiens, pour cr\u00e9er des br\u00e8ches<\/i>\u00a0\u00bb. Sollicit\u00e9e par RFI, l\u2019Agence nationale de la s\u00e9curit\u00e9 des syst\u00e8mes des informations (ANSSI<\/strong>), qui d\u00e9pend du gouvernement fran\u00e7ais, n\u2019a pas souhait\u00e9 r\u00e9agir.<\/p>\n

Pour un \u00c9tat, il y a plusieurs moyens d\u2019obtenir un acc\u00e8s aux contenus des conversations. Soit il demande \u00e0 l\u2019entreprise la cr\u00e9ation d\u2019une \u00ab\u00a0backdoor\u00a0\u00bb (porte d\u00e9rob\u00e9e) dans l\u2019application, qui lui permet de voir ce qu\u2019il s\u2019y \u00e9change \u2013 parfois en faisant pression sur elle, par exemple gr\u00e2ce \u00e0 des taxes. Autre possibilit\u00e9 selon Benjamin Leroux, consultant en s\u00e9curit\u00e9 informatique\u00a0: \u00ab L\u2019\u00c9tat<\/i>utilise sa force de frappe technologique, c\u2019est-\u00e0-dire ses propres informaticiens, pour cr\u00e9er des br\u00e8ches<\/i>\u00a0\u00bb. Sollicit\u00e9e par RFI.fr, l\u2019Agence nationale de la s\u00e9curit\u00e9 des syst\u00e8mes des informations (ANSSI<\/strong>), qui d\u00e9pend du gouvernement fran\u00e7ais, n\u2019a pas souhait\u00e9 r\u00e9agir.<\/p>\n

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\"Technologie:<\/div>\n<\/div>\n
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Les \u00c9tats qui r\u00e9clament d\u2019acc\u00e9der aux contenus des \u00e9changes informatiques entre leurs citoyens le font souvent au motif de la s\u00e9curit\u00e9 du pays<\/strong>. Mais la s\u00fbret\u00e9 nationale n\u2019est pas la seule \u00e0 \u00eatre mise dans la balance face \u00e0 la vie priv\u00e9e des individus. \u00ab\u00a0Les informations \u00e9chang\u00e9es sur les r\u00e9seaux sociaux et sur les messageries instantan\u00e9es ont une valeur \u00e9conomique<\/i>\u00a0\u00bb, rappelle Benjamin Leroux.<\/p>\n

Si vous parlez de partir \u00e0 l\u2019\u00e9tranger sur votre Gmail ou via Facebook Messenger, il n\u2019est pas rare de voir ensuite fleurir, quand vous naviguez sur internet, des publicit\u00e9s pour des agences de voyages ou des compagnies a\u00e9riennes. On peut donc penser que les fournisseurs de messagerie captent des informations dans les conversations, et s\u2019en servent ensuite pour cibler les publicit\u00e9s en fonction des discussions de l\u2019internaute<\/strong>.<\/p>\n

Amnesty International et les experts de la protection des donn\u00e9es partagent une conclusion\u00a0: \u00ab\u00a0Il faut sensibiliser les utilisateurs \u00e0 la fa\u00e7on dont ils \u00e9changent sur les r\u00e9seaux sociaux et les messageries instantan\u00e9es<\/i>\u00a0\u00bb,\u00a0affirme la responsable d\u2019Amnesty Dominique Curis. \u00ab\u00a0Il ne sert \u00e0 rien de prot\u00e9ger des contenus qui ne sont pas sensibles,<\/i> d\u00e9veloppe Benjamin Leroux, mais il ne sert non plus \u00e0 rien de vouloir \u00e0 tout prix s\u00e9curiser ses discussions via messagerie instantan\u00e9e si l\u2019on affiche toute sa vie sur son profil Facebook<\/i>\u00a0\u00bb.<\/p>\n

Et le consultant en s\u00e9curit\u00e9 informatique de conclure, sans citer de nom\u00a0: \u00ab\u00a0Certaines entreprises sur la liste d\u2019Amnesty permettent de chiffrer les \u00e9changes. Sinon il y a toujours moyen d\u2019encoder ses emails, ou de recourir \u00e0 des r\u00e9seaux informatiques qui permettent de conserver l\u2019anonymat, comme Tor<\/strong>.<\/i>\u00a0\u00bb<\/p>\n<\/div>\n

Source:RFI<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Vos applications de messageries instantan\u00e9es pr\u00e9f\u00e9r\u00e9es WhatsApp, Facebook, Messenger sont elles s\u00e9curis\u00e9es? Communiquez vous en toute s\u00e9curit\u00e9? L’organisation Amnesty International a d\u00e9cid\u00e9 de se pencher sur la question et s\u2019est int\u00e9ress\u00e9e au chiffrement des donn\u00e9es \u00e9chang\u00e9es via les messageries instantan\u00e9es. Classement \u00e0 l\u2019appui, l\u2019ONG de d\u00e9fense des droits de l\u2019homme cherche \u00e0 savoir quelles sont …<\/p>\n","protected":false},"author":40,"featured_media":41655,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[6100],"tags":[4725,13775,6102],"class_list":["post-41654","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-technologie","tag-hightech","tag-messagerie-instantanee","tag-technologie","post_format-post-format-image"],"yoast_head":"\nTechnologie: Communiquons nous en s\u00e9curit\u00e9 avec les messageries instantan\u00e9es? - AfrikMag<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/afrikmag.com\/var\/www\/vhosts\/afrikmag.compublic_html\/technologie-communiquons-nous-en-securite-avec-les-messageries-instantanees\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Technologie: Communiquons nous en s\u00e9curit\u00e9 avec les messageries instantan\u00e9es? - AfrikMag\" \/>\n<meta property=\"og:description\" content=\"Vos applications de messageries instantan\u00e9es pr\u00e9f\u00e9r\u00e9es WhatsApp, Facebook, Messenger sont elles s\u00e9curis\u00e9es? 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