{"id":2191,"date":"2025-11-27T16:22:32","date_gmt":"2025-11-27T14:22:32","guid":{"rendered":"https:\/\/computershop.eu\/blog\/?p=2181"},"modified":"2025-11-27T16:22:32","modified_gmt":"2025-11-27T14:22:32","slug":"les-cyberattaques-les-plus-courantes","status":"publish","type":"post","link":"https:\/\/computershop.eu\/blog\/fr\/les-cyberattaques-les-plus-courantes","title":{"rendered":"Les cyberattaques les plus courantes"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<p>\u00c0 l&#8217;\u00e8re du num\u00e9rique, la cybers\u00e9curit\u00e9 est devenue essentielle pour les entreprises comme pour les particuliers. Les cyberattaques sont de plus en plus sophistiqu\u00e9es et leurs cons\u00e9quences peuvent \u00eatre graves\u00a0: pertes financi\u00e8res, vol de donn\u00e9es ou atteinte \u00e0 la r\u00e9putation. Cet article analyse <strong>les types de cyberattaques les plus courants<\/strong> et propose <strong>des m\u00e9thodes de protection efficaces<\/strong> pour vous permettre de garder une longueur d&#8217;avance sur les attaquants. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"> 1. Hame\u00e7onnage &#8211; cyberattaque qui trompe l&#8217;utilisateur <\/h2>\n\n\n\n<p> L\u2019hame\u00e7onnage est l\u2019une des cyberattaques les plus r\u00e9pandues. L\u2019attaquant envoie des messages d\u2019apparence l\u00e9gitime (courriel, SMS, WhatsApp) pour inciter la victime \u00e0 divulguer des donn\u00e9es sensibles, telles que des mots de passe ou des informations bancaires. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> <strong>Comment se prot\u00e9ger contre le phishing\u00a0:<\/strong> <\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li> V\u00e9rifiez l&#8217;adresse e-mail de l&#8217;exp\u00e9diteur. <\/li>\n\n\n\n<li> Ne cliquez pas sur les liens suspects. <\/li>\n\n\n\n<li> Utilisez l&#8217;authentification \u00e0 deux facteurs (2FA). <\/li>\n\n\n\n<li> Installez des solutions anti-hame\u00e7onnage sur les appareils. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"> 2. Ransomware\u00a0: blocage de donn\u00e9es contre ran\u00e7on <\/h2>\n\n\n\n<p> Un ran\u00e7ongiciel chiffre les fichiers d&#8217;un appareil et exige une ran\u00e7on pour les d\u00e9verrouiller. Il repr\u00e9sente une menace majeure pour les entreprises, surtout en l&#8217;absence de sauvegardes \u00e0 jour. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> <strong>M\u00e9thodes de protection :<\/strong> <\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li> Cr\u00e9ez <strong>des sauvegardes r\u00e9guli\u00e8res de vos donn\u00e9es<\/strong> . <\/li>\n\n\n\n<li> \u00c9vitez de t\u00e9l\u00e9charger des fichiers provenant de sources inconnues. <\/li>\n\n\n\n<li> Mettez \u00e0 jour votre syst\u00e8me d&#8217;exploitation et vos applications. <\/li>\n\n\n\n<li> Utilisez un antivirus avec protection contre les ransomwares. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"> 3. Attaques cybern\u00e9tiques par force brute <\/h2>\n\n\n\n<p> Ces attaques consistent \u00e0 tester automatiquement des milliers de combinaisons de mots de passe pour acc\u00e9der \u00e0 un compte. Elles sont fr\u00e9quentes sur les sites web, les serveurs et les plateformes de connexion. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> <strong>Comment se prot\u00e9ger :<\/strong> <\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li> Utilisez des mots de passe complexes et uniques. <\/li>\n\n\n\n<li> Permet de limiter le nombre de tentatives d&#8217;authentification. <\/li>\n\n\n\n<li> Utilisez un <strong>gestionnaire de mots de passe<\/strong> . <\/li>\n\n\n\n<li> Activer l&#8217;authentification \u00e0 deux facteurs (2FA). <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"> 4. Injection SQL &#8211; acc\u00e8s non autoris\u00e9 \u00e0 la base de donn\u00e9es <\/h2>\n\n\n\n<p> Ce type d&#8217;attaque cible les sites web qui ne valident pas correctement les donn\u00e9es saisies dans les formulaires. L&#8217;attaquant injecte du code SQL pour acc\u00e9der \u00e0 la base de donn\u00e9es, la modifier ou la supprimer. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> <strong>Mesures de protection des d\u00e9veloppeurs\u00a0:<\/strong> <\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li> Validation stricte des donn\u00e9es saisies par l&#8217;utilisateur. <\/li>\n\n\n\n<li> Utilisation <strong>de requ\u00eates pr\u00e9par\u00e9es<\/strong> . <\/li>\n\n\n\n<li> Mise \u00e0 jour constante du serveur et des frameworks. <\/li>\n\n\n\n<li> Surveillance du trafic suspect. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"> 5. Attaques DDoS (d\u00e9ni de service distribu\u00e9) <\/h2>\n\n\n\n<p> L&#8217;objectif de cette attaque est de surcharger un serveur ou un r\u00e9seau afin de rendre le site web inaccessible aux utilisateurs. Elle touche particuli\u00e8rement les entreprises en ligne. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> <strong>Comment pr\u00e9venir une attaque DDoS\u00a0:<\/strong> <\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li> Utilise des services de protection contre les attaques DDoS ( <a href=\"https:\/\/www.cloudflare.com\/lp\/dg\/brand\/cloudflare-enterprise\" target=\"_blank\" rel=\"noreferrer noopener\">Cloudflare<\/a> , AWS Shield). <\/li>\n\n\n\n<li> Configurez correctement le pare-feu. <\/li>\n\n\n\n<li> Surveillez le trafic web en temps r\u00e9el. <\/li>\n\n\n\n<li> Utilisez l&#8217;\u00e9quilibrage de charge et la limitation du trafic. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"> 6. Logiciels malveillants &#8211; programmes malveillants cach\u00e9s <\/h2>\n\n\n\n<p> Les logiciels malveillants peuvent prendre de nombreuses formes\u00a0: virus, logiciels espions, chevaux de Troie ou enregistreurs de frappe. Leur but est de compromettre le syst\u00e8me \u00e0 l\u2019insu de l\u2019utilisateur. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> <strong>Comment se prot\u00e9ger :<\/strong> <\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li> Installez un antivirus fiable. <\/li>\n\n\n\n<li> \u00c9vitez d&#8217;installer des logiciels pirat\u00e9s. <\/li>\n\n\n\n<li> Mettez r\u00e9guli\u00e8rement \u00e0 jour votre syst\u00e8me d&#8217;exploitation. <\/li>\n\n\n\n<li> Ne connectez pas de cl\u00e9s USB inconnues. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"> 7. Cyberattaques sous forme de manipulation psychologique <\/h2>\n\n\n\n<p> Toutes les cyberattaques n&#8217;impliquent pas de technologies sophistiqu\u00e9es. Parfois, les attaquants exploitent les faiblesses humaines, en utilisant des tactiques de manipulation psychologique pour acc\u00e9der \u00e0 des informations. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"> <strong>Comment se prot\u00e9ger :<\/strong> <\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li> Soyez sceptique face aux demandes urgentes ou trop belles pour \u00eatre vraies. <\/li>\n\n\n\n<li> Former les employ\u00e9s \u00e0 la cybers\u00e9curit\u00e9. <\/li>\n\n\n\n<li> Ne communiquez pas d&#8217;informations sensibles par t\u00e9l\u00e9phone ou par courriel. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"> Cyberattaques contre \u00e9ducation num\u00e9rique <\/h2>\n\n\n\n<p> Les cyberattaques \u00e9voluent constamment, mais <strong>la protection commence par l&#8217;\u00e9ducation num\u00e9rique<\/strong> . Installer un antivirus et changer son mot de passe ne suffit pas. Il vous faut\u00a0: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li> sauvegardes r\u00e9guli\u00e8res <\/li>\n\n\n\n<li> mots de passe forts <\/li>\n\n\n\n<li> conscience des risques <\/li>\n\n\n\n<li> solutions de s\u00e9curit\u00e9 modernes <\/li>\n<\/ul>\n\n\n\n<p> Investir dans la cybers\u00e9curit\u00e9 co\u00fbte toujours moins cher qu&#8217;une attaque r\u00e9ussie. Soyez prudent, restez inform\u00e9 et souvenez-vous\u00a0: <strong>la meilleure d\u00e9fense, c&#8217;est la pr\u00e9vention<\/strong> .<\/p>\n\t<div class=\"quickshare-container\">\r\n\t<ul class=\"quickshare-genericons monochrome quickshare-effect-expand\">\r\n\t\t<li class=\"quickshare-share\">Share:<\/li> \r\n\t\t<li><a href=\"https:\/\/facebook.com\/sharer.php?u=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fles-cyberattaques-les-plus-courantes&amp;t=Les+cyberattaques+les+plus+courantes+<+Refurbished+Computers+-+ComputerShop.EU\" target=\"_blank\" title=\"Share on Facebook\"><span class=\"quickshare-facebook\">Facebook<\/span><\/a><\/li>\t\t<li><a href=\"https:\/\/twitter.com\/intent\/tweet?url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fles-cyberattaques-les-plus-courantes&amp;text=Les+cyberattaques+les+plus+courantes+<+Refurbished+Computers+-+ComputerShop.EU\" target=\"_blank\" title=\"Share on Twitter\"><span class=\"quickshare-twitter\">Twitter<\/span><\/a><\/li>\t\t<li><a href=\"http:\/\/pinterest.com\/pin\/create\/button\/?url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fles-cyberattaques-les-plus-courantes&amp;media=https%3A%2F%2Fcomputershop.eu%2Fblog%2Fwp-content%2Fuploads%2F2025%2F11%2Fcyber-attacks-300x168.png&amp;description=%C3%80+l%27%C3%A8re+du+num%C3%A9rique%2C+la+cybers%C3%A9curit%C3%A9+est+devenue+essentielle+pour+les+entreprises+comme+pour+les+particuliers.+Les+cyberattaques+sont+de+plus+en+plus+sophistiqu%C3%A9es+et+leurs+cons%C3%A9quences+peuvent+%C3%AAtre+graves%C2%A0%3A+pertes+financi%C3%A8res%2C+vol+de+donn%C3%A9es+ou+atteinte+%C3%A0+la+r%C3%A9putation.%26hellip%3B\" target=\"_blank\" title=\"Share on Pinterest\"><span class=\"quickshare-pinterest\">Pinterest<\/span><\/a><\/li>\t\t<li><a href=\"http:\/\/linkedin.com\/shareArticle?mini=true&amp;url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fles-cyberattaques-les-plus-courantes&amp;title=Les+cyberattaques+les+plus+courantes&amp;source=Refurbished+Computers+-+ComputerShop.EU&amp;summary=%C3%80+l%27%C3%A8re+du+num%C3%A9rique%2C+la+cybers%C3%A9curit%C3%A9+est+devenue+essentielle+pour+les+entreprises+comme+pour+les+particuliers.+Les+cyberattaques+sont+de+plus+en+plus+sophistiqu%C3%A9es+et+leurs+cons%C3%A9quences+peuvent+%C3%AAtre+graves%C2%A0%3A+pertes+financi%C3%A8res%2C+vol+de+donn%C3%A9es+ou+atteinte+%C3%A0+la+r%C3%A9putation.%26hellip%3B\" title=\"Share on Linkedin\" target=\"_blank\"><span class=\"quickshare-linkedin\">Linkedin<\/span><\/a><\/li>\t\t<li><a href=\"https:\/\/plus.google.com\/share?url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fles-cyberattaques-les-plus-courantes\" target=\"_blank\" title=\"Share on Google+\"><span class=\"quickshare-googleplus\">Google+<\/span><\/a><\/li>\t\t\t\t\t\t\t\t<li><a href=\"mailto:?subject=Refurbished+Computers+-+ComputerShop.EU:+Les+cyberattaques+les+plus+courantes&amp;body=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fles-cyberattaques-les-plus-courantes\" target=\"_blank\" title=\"Share via Email\"><span class=\"quickshare-email\">Email<\/span><\/a><\/li>\t<\/ul>\r\n\t<\/div>\r\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\u00c0 l&#8217;\u00e8re du num\u00e9rique, la cybers\u00e9curit\u00e9 est devenue essentielle pour les entreprises comme pour les particuliers. Les cyberattaques sont de plus en plus sophistiqu\u00e9es et leurs cons\u00e9quences peuvent \u00eatre graves\u00a0: pertes financi\u00e8res, vol de donn\u00e9es ou atteinte \u00e0 la r\u00e9putation. &hellip; <a href=\"https:\/\/computershop.eu\/blog\/fr\/les-cyberattaques-les-plus-courantes\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":2185,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[178],"tags":[7220,7223,7226,5904,4233],"class_list":["post-2191","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutoriels","tag-cyberattaque","tag-piratage","tag-protection-en-ligne","tag-securite-des-donnees","tag-securite-informatique"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les cyberattaques les plus courantes - Refurbished Computers - ComputerShop.EU<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez quelles sont les m\u00e9thodes d&#039;attaques informatiques les plus courantes et comment vous prot\u00e9ger efficacement.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/computershop.eu\/blog\/fr\/les-cyberattaques-les-plus-courantes\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les cyberattaques les plus courantes - Refurbished Computers - ComputerShop.EU\" \/>\n<meta property=\"og:description\" content=\"D\u00e9couvrez quelles sont les m\u00e9thodes d&#039;attaques informatiques les plus courantes et comment vous prot\u00e9ger efficacement.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/computershop.eu\/blog\/fr\/les-cyberattaques-les-plus-courantes\" \/>\n<meta property=\"og:site_name\" content=\"Refurbished Computers - 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