{"id":321426,"date":"2026-05-11T15:18:27","date_gmt":"2026-05-11T15:18:27","guid":{"rendered":"https:\/\/www.adlice.com\/outdated-software-hackers-security\/"},"modified":"2026-05-11T15:22:32","modified_gmt":"2026-05-11T15:22:32","slug":"outdated-software-hackers-security","status":"publish","type":"post","link":"https:\/\/www.adlice.com\/fr\/outdated-software-hackers-security\/","title":{"rendered":"Vos logiciels obsol\u00e8tes sont une porte ouverte pour les hackers"},"content":{"rendered":"\n<p>On l&#8217;a tous fait. Une petite notification appara\u00eet dans un coin de l&#8217;\u00e9cran : &#8220;Mise \u00e0 jour disponible.&#8221; On clique sur &#8220;Me rappeler plus tard&#8221; sans vraiment y r\u00e9fl\u00e9chir. On est en plein milieu de quelque chose. On n&#8217;a pas envie de red\u00e9marrer maintenant. C&#8217;est tout \u00e0 fait compr\u00e9hensible.<\/p>\n\n\n\n<p>Le probl\u00e8me, c&#8217;est que les hackers comptent exactement l\u00e0-dessus.<\/p>\n\n\n\n<p>Les logiciels obsol\u00e8tes sont aujourd&#8217;hui l&#8217;un des principaux moyens par lesquels les attaquants s&#8217;introduisent dans les ordinateurs. Pas gr\u00e2ce \u00e0 des techniques \u00e9labor\u00e9es, mais simplement parce qu&#8217;une faille connue n&#8217;a pas \u00e9t\u00e9 corrig\u00e9e \u00e0 temps. Selon le <a href=\"https:\/\/securityboulevard.com\/2026\/03\/46-vulnerability-statistics-2026-key-trends-in-discovery-exploitation-and-risk\/\">rapport sur les vuln\u00e9rabilit\u00e9s 2026<\/a>, environ 60 % des violations de donn\u00e9es impliquent une vuln\u00e9rabilit\u00e9 qui avait d\u00e9j\u00e0 un correctif disponible. Le patch existait. Il n&#8217;avait juste pas \u00e9t\u00e9 install\u00e9.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-white-color has-accent-background-color has-text-color has-background has-link-color wp-elements-a56f928b43a21cceefc44829700f0d3f\">Comment \u00e7a marche concr\u00e8tement<\/p>\n\n\n\n<p>Quand une faille de s\u00e9curit\u00e9 est d\u00e9couverte dans un logiciel, l&#8217;\u00e9diteur publie un correctif. Ce correctif est public. Et d\u00e8s qu&#8217;il sort, les attaquants l&#8217;\u00e9tudient : ils comprennent exactement ce qui \u00e9tait cass\u00e9, puis vont chercher les machines qui n&#8217;ont pas encore mis \u00e0 jour.<\/p>\n\n\n\n<p>\u00c7a va vite. <strong>Le d\u00e9lai m\u00e9dian entre la divulgation d&#8217;une faille et son exploitation active est d\u00e9sormais inf\u00e9rieur \u00e0 5 jours<\/strong>, selon le <a href=\"https:\/\/securityboulevard.com\/2026\/03\/46-vulnerability-statistics-2026-key-trends-in-discovery-exploitation-and-risk\/\">rapport Mandiant M-Trends<\/a>. En 2026, cela signifie que 131 nouvelles failles sont d\u00e9couvertes chaque jour, et que les attaquants les exploitent presque imm\u00e9diatement.<\/p>\n\n\n\n<p>Et ils ne vous ciblent pas personnellement non plus. Ils lancent des scans automatis\u00e9s sur tout Internet (<a href=\"https:\/\/www.fortinet.com\/resources\/cyberglossary\/recent-cyber-attacks\">Fortinet a recens\u00e9 environ 36 000 scans malveillants par seconde<\/a> en 2025), en cherchant simplement les machines qui tournent encore sur de vieilles versions vuln\u00e9rables. Si la v\u00f4tre appara\u00eet dans les r\u00e9sultats, vous \u00eates dans le viseur.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"497\" src=\"https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-1024x497.png\" alt=\"\" class=\"wp-image-321415\" style=\"aspect-ratio:1.8333594431886848;width:897px;height:auto\" srcset=\"https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-1024x497.png 1024w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-300x146.png 300w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-1536x746.png 1536w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-2048x995.png 2048w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-320x155.png 320w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-480x233.png 480w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/countdown-800x389.png 800w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-white-color has-accent-background-color has-text-color has-background has-link-color wp-elements-c38366b670c80dfd7b7d0b65f5aed8a6\">Ce ne sont pas que les logiciels obscurs qui sont vis\u00e9s<\/p>\n\n\n\n<p>On imagine souvent que les hackers s&#8217;en prennent \u00e0 des programmes bizarres et peu utilis\u00e9s. En r\u00e9alit\u00e9, ils ciblent ce que tout le monde a : Chrome, Firefox, VLC, WinRAR, Zoom, votre lecteur PDF. Justement parce que tout le monde les a. Une faille dans un logiciel populaire, c&#8217;est une faille qui fonctionne sur des dizaines de millions d&#8217;ordinateurs en m\u00eame temps.<\/p>\n\n\n\n<p>Votre navigateur seul re\u00e7oit des correctifs en permanence. Pareil pour les lecteurs PDF, les lecteurs multim\u00e9dias, et m\u00eame les gestionnaires de mots de passe. N&#8217;importe lequel d&#8217;entre eux, laiss\u00e9 obsol\u00e8te quelques semaines, peut devenir la porte d&#8217;entr\u00e9e.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-white-color has-accent-background-color has-text-color has-background has-link-color wp-elements-5dd075c2578298a59d979bc4783b4229\">Ce qui se passe vraiment si quelqu&#8217;un entre<\/p>\n\n\n\n<p>\u00c7a d\u00e9pend de ce qu&#8217;ils cherchent. Mais voici les sc\u00e9narios les plus courants :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ransomware :<\/strong> vos fichiers sont chiffr\u00e9s et on vous demande de payer pour les r\u00e9cup\u00e9rer, sans garantie que \u00e7a marche. Selon les <a href=\"https:\/\/www.indusface.com\/blog\/key-cybersecurity-statistics\/\">donn\u00e9es 2026<\/a>, 54 % des attaques ransomware partent d&#8217;un syst\u00e8me non patch\u00e9.<\/li>\n\n\n\n<li><strong>Vol de mots de passe :<\/strong> un petit programme tourne discr\u00e8tement en arri\u00e8re-plan et r\u00e9cup\u00e8re tout ce qui est enregistr\u00e9 dans votre navigateur. Mots de passe, sessions bancaires, cookies. Quand vous vous en rendez compte, le mal est fait.<\/li>\n\n\n\n<li><strong>Votre PC mis au service de quelqu&#8217;un d&#8217;autre :<\/strong> cryptominage, envoi de spam, trafic malveillant. Votre machine devient un outil \u00e0 votre insu. Vous remarquez juste qu&#8217;elle est plus lente que d&#8217;habitude et vous ne savez pas pourquoi.<\/li>\n\n\n\n<li><strong>Une backdoor :<\/strong> l&#8217;attaquant installe quelque chose qui lui permet de revenir quand il veut. M\u00eame si vous ne remarquez rien, il peut rester l\u00e0 pendant des mois. Le <a href=\"https:\/\/www.techrepublic.com\/article\/news-top-cyberattacks-2026-so-far\/\">bilan des cyberattaques 2026 de TechRepublic<\/a> retrouve ce type d&#8217;acc\u00e8s persistant derri\u00e8re les incidents les plus marquants de l&#8217;ann\u00e9e.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-1024x559.png\" alt=\"\" class=\"wp-image-321414\" srcset=\"https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-1024x559.png 1024w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-300x164.png 300w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-1536x838.png 1536w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-2048x1117.png 2048w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-320x175.png 320w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-480x262.png 480w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/cybersec_outcome-800x436.png 800w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-white-color has-accent-background-color has-text-color has-background has-link-color wp-elements-e146d2f4c070df27b13f81861c0fe9fb\">&#8220;J&#8217;ai un antivirus, pourtant&#8221;<\/p>\n\n\n\n<p>C&#8217;est vrai, et c&#8217;est une bonne chose. Mais l&#8217;antivirus a une vraie limite dans ce cas pr\u00e9cis.<\/p>\n\n\n\n<p>Un antivirus est efficace pour d\u00e9tecter un malware une fois qu&#8217;il est d\u00e9j\u00e0 sur votre machine. Ce qu&#8217;il n&#8217;est pas con\u00e7u pour faire, c&#8217;est emp\u00eacher quelqu&#8217;un d&#8217;entrer via une faille non patch\u00e9e avant m\u00eame de d\u00e9poser quoi que ce soit. L&#8217;entr\u00e9e se fait en premier, le malware arrive ensuite (si jamais il arrive). \u00c0 ce stade, la porte \u00e9tait d\u00e9j\u00e0 ouverte.<\/p>\n\n\n\n<p>C&#8217;est pourquoi <a href=\"https:\/\/www.cisa.gov\/known-exploited-vulnerabilities-catalog\">les recommandations officielles de la CISA<\/a> placent le patchage au-dessus de la d\u00e9tection comme priorit\u00e9. Maintenir ses logiciels \u00e0 jour, c&#8217;est ce qui emp\u00eache l&#8217;entr\u00e9e de se produire. Des outils comme <a href=\"https:\/\/www.adlice.com\/fr\/roguekiller\/\"><strong>Adlice Protect<\/strong><\/a> ajoutent ensuite une deuxi\u00e8me couche, pour attraper ce qui passerait quand m\u00eame.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-white-color has-accent-background-color has-text-color has-background has-link-color wp-elements-0ee7b1f9cb609d8492d0ea1122c5aeeb\">La vraie raison pour laquelle on ne met pas \u00e0 jour<\/p>\n\n\n\n<p>Ce n&#8217;est pas que les gens s&#8217;en foutent. C&#8217;est que tout mettre \u00e0 jour est franchement p\u00e9nible. Chaque application a son propre m\u00e9canisme : certaines affichent des notifications, d&#8217;autres se mettent \u00e0 jour silencieusement, d&#8217;autres ne font rien du tout. <a href=\"https:\/\/www.vikingcloud.com\/blog\/cybersecurity-statistics\">38 % des personnes disent ne pas r\u00e9ussir \u00e0 suivre le rythme<\/a> des mises \u00e0 jour, m\u00eame quand elles essaient.<\/p>\n\n\n\n<p>Et Windows Update ne s&#8217;occupe que des logiciels Microsoft. Tout le reste (navigateur, lecteur multim\u00e9dia, utilitaires) c&#8217;est \u00e0 vous de le g\u00e9rer.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"497\" src=\"https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-1024x497.png\" alt=\"\" class=\"wp-image-321418\" srcset=\"https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-1024x497.png 1024w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-300x146.png 300w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-1536x746.png 1536w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-2048x994.png 2048w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-320x155.png 320w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-480x233.png 480w, https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/computer_mess-800x388.png 800w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-white-color has-accent-background-color has-text-color has-background has-link-color wp-elements-88896468a3d1669863a73470cdeb485e\">C&#8217;est exactement pour \u00e7a qu&#8217;on a cr\u00e9\u00e9 UCheck<\/p>\n\n\n\n<p><a href=\"https:\/\/www.adlice.com\/fr\/ucheck\/\"><strong>UCheck<\/strong><\/a> scanne votre PC, trouve toutes les applications install\u00e9es et vous dit ce qui est obsol\u00e8te parmi plus de 10 000 logiciels r\u00e9f\u00e9renc\u00e9s. Ensuite, il les met \u00e0 jour directement depuis les sources officielles. Pas de miroirs tiers, pas d&#8217;extras non sollicit\u00e9s.<\/p>\n\n\n\n<p>La <a href=\"https:\/\/consumer.ftc.gov\/articles\/malware-how-protect-against-detect-and-remove-it\">FTC recommande<\/a> de ne t\u00e9l\u00e9charger les mises \u00e0 jour que depuis les canaux officiels, et c&#8217;est exactement comme \u00e7a que fonctionne UCheck. Un scan, une liste, tout est \u00e0 jour. Et si un site web vous dit un jour que votre logiciel est obsol\u00e8te et qu&#8217;il faut le mettre \u00e0 jour, lancez UCheck d&#8217;abord. S&#8217;il dit que tout est \u00e0 jour, le site vous ment et essaie probablement de vous faire installer quelque chose.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Plus de 10 000 applications surveill\u00e9es :<\/strong> navigateurs, lecteurs PDF, lecteurs multim\u00e9dias, outils de d\u00e9veloppement, et bien d&#8217;autres.<\/li>\n\n\n\n<li><strong>Sources officielles uniquement :<\/strong> toujours la vraie mise \u00e0 jour, jamais une fausse.<\/li>\n\n\n\n<li><strong>Un seul endroit pour tout :<\/strong> fini de courir apr\u00e8s les notifications de chaque application.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <a href=\"https:\/\/www.adlice.com\/fr\/ucheck\/\"><strong>T\u00e9l\u00e9charger UCheck gratuitement<\/strong><\/a><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-white-color has-accent-background-color has-text-color has-background has-link-color wp-elements-eef10f08b70d04124a26f5d1b11717f4\">En r\u00e9sum\u00e9<\/p>\n\n\n\n<p>Vous n&#8217;avez pas besoin d&#8217;\u00eatre expert en informatique pour rester en s\u00e9curit\u00e9. La plupart des attaques ne sont pas sophistiqu\u00e9es, elles sont opportunistes. Elles trouvent la porte ouverte et entrent. Garder ses logiciels \u00e0 jour, c&#8217;est fermer cette porte. C&#8217;est probablement la chose la plus efficace qu&#8217;une personne ordinaire puisse faire pour sa propre s\u00e9curit\u00e9, et ce n&#8217;est vraiment pas compliqu\u00e9 avec le bon outil.<\/p>\n\n\n\n<p>Si vous pensez que quelque chose cloche d\u00e9j\u00e0, <a href=\"https:\/\/www.cisa.gov\/news-events\/news\/recovering-viruses-worms-and-trojan-horses\">la CISA a un guide de r\u00e9cup\u00e9ration<\/a> qui vaut la peine d&#8217;\u00eatre mis de c\u00f4t\u00e9. Mais id\u00e9alement, vous n&#8217;en aurez jamais besoin.<\/p>\n\n\n\n<p>\ud83d\udc49 <a href=\"https:\/\/www.adlice.com\/fr\/ucheck\/\"><strong>T\u00e9l\u00e9charger UCheck &#8211; Gratuit<\/strong><\/a><br>\ud83d\udc49 <a href=\"https:\/\/www.adlice.com\/fr\/roguekiller\/\"><strong>T\u00e9l\u00e9charger Adlice Protect &#8211; Essai Gratuit<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>On l&#8217;a tous fait. Une petite notification appara\u00eet dans un coin de l&#8217;\u00e9cran : &#8220;Mise \u00e0 jour disponible.&#8221; On clique sur &#8220;Me rappeler plus tard&#8221; sans vraiment y r\u00e9fl\u00e9chir. On est en plein milieu de quelque chose. On n&#8217;a pas envie de red\u00e9marrer maintenant. C&#8217;est tout \u00e0 fait compr\u00e9hensible. Le probl\u00e8me, c&#8217;est que les hackers&hellip;<\/p>\n","protected":false},"author":1,"featured_media":321424,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[110],"tags":[596,3000,3019,443],"class_list":["post-321426","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide-fr","tag-hack-fr","tag-ucheck-fr","tag-updates","tag-vulnerabilites","category-110","description-off"],"views":4,"yoast_score":65,"yoast_readable":30,"featured_image_src":"https:\/\/www.adlice.com\/wp-content\/uploads\/2026\/05\/update_error-scaled.png","author_info":{"display_name":"tigzy","author_link":"https:\/\/www.adlice.com\/fr\/author\/tigzy\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Logiciels obsol\u00e8tes : comment les hackers entrent dans votre PC \u2022 Adlice Software<\/title>\n<meta name=\"description\" content=\"60 % des violations de donn\u00e9es viennent d&#039;une faille non corrig\u00e9e. D\u00e9couvrez comment les hackers exploitent vos logiciels non mis \u00e0 jour, et comment y rem\u00e9dier.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.adlice.com\/fr\/outdated-software-hackers-security\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Logiciels obsol\u00e8tes : comment les hackers entrent dans votre PC \u2022 Adlice Software\" \/>\n<meta property=\"og:description\" content=\"60 % des violations de donn\u00e9es viennent d&#039;une faille non corrig\u00e9e. 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