{"id":1748,"date":"2025-09-24T09:37:00","date_gmt":"2025-09-24T07:37:00","guid":{"rendered":"https:\/\/www.antivirusedition.com\/blog\/?p=1748"},"modified":"2025-09-24T09:38:02","modified_gmt":"2025-09-24T07:38:02","slug":"panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement","status":"publish","type":"post","link":"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html","title":{"rendered":"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Une matin\u00e9e qui tourne au cauchemar<\/h2>\n\n\n\n<p>Un lundi de janvier, le Coll\u00e8ge Saint-Jacques se pr\u00e9parait \u00e0 entamer une semaine ordinaire. Professeurs, \u00e9l\u00e8ves et personnel administratif utilisaient l\u2019ENT (Espace Num\u00e9rique de Travail) pour g\u00e9rer leurs cours, devoirs et bulletins scolaires.<\/p>\n\n\n\n<p>\u00c0 8h17, tout s\u2019est arr\u00eat\u00e9. Un \u00e9cran noir affichant un message rouge gla\u00e7ant est apparu sur les ordinateurs :<br><strong>\u00ab Vos donn\u00e9es sont chiffr\u00e9es. Payez pour les r\u00e9cup\u00e9rer. \u00bb<\/strong><\/p>\n\n\n\n<p>Ce qui ressemblait d\u2019abord \u00e0 un bug s\u2019est rapidement transform\u00e9 en chaos : serveurs bloqu\u00e9s, imprimantes hors service, bornes Wi-Fi inaccessibles.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles-1024x1024.png\" alt=\"\" class=\"wp-image-1769\" srcset=\"https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles-1024x1024.png 1024w, https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles-300x300.png 300w, https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles-150x150.png 150w, https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles-768x768.png 768w, https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles.png 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Le choc et l\u2019impuissance<\/h2>\n\n\n\n<ul>\n<li><strong>Les enseignants<\/strong> ne pouvaient plus utiliser leurs supports num\u00e9riques.<\/li>\n\n\n\n<li><strong>L\u2019administration<\/strong> avait perdu l\u2019acc\u00e8s aux dossiers des \u00e9l\u00e8ves, aux notes et aux absences.<\/li>\n\n\n\n<li><strong>Les \u00e9l\u00e8ves<\/strong> oscillaient entre excitation et inqui\u00e9tude.<\/li>\n\n\n\n<li><strong>Les familles<\/strong>, alert\u00e9es par rumeurs, inondaient le secr\u00e9tariat d\u2019appels.<\/li>\n<\/ul>\n\n\n\n<p>En quelques heures, l\u2019\u00e9tablissement a plong\u00e9 dans une crise totale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Des semaines de perturbation<\/h2>\n\n\n\n<p>Pendant pr\u00e8s de six semaines, le coll\u00e8ge a d\u00fb revenir aux m\u00e9thodes d\u2019il y a vingt ans :<\/p>\n\n\n\n<ul>\n<li>Cours sur tableau noir et photocopies,<\/li>\n\n\n\n<li>Fiches papier pour l\u2019administration,<\/li>\n\n\n\n<li>Annonces faites au micro plut\u00f4t que par mail,<\/li>\n\n\n\n<li>Retards dans l\u2019envoi des bulletins et des inscriptions au lyc\u00e9e.<\/li>\n<\/ul>\n\n\n\n<p>M\u00eame si certaines donn\u00e9es ont \u00e9t\u00e9 r\u00e9cup\u00e9r\u00e9es gr\u00e2ce \u00e0 de vieilles sauvegardes, une partie a \u00e9t\u00e9 d\u00e9finitivement perdue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi le coll\u00e8ge \u00e9tait vuln\u00e9rable ?<\/h2>\n\n\n\n<p>L\u2019audit post-crise a mis en \u00e9vidence des failles \u00e9videntes :<\/p>\n\n\n\n<ul>\n<li>Logiciels non mis \u00e0 jour depuis des mois,<\/li>\n\n\n\n<li>Absence de sauvegardes r\u00e9guli\u00e8res,<\/li>\n\n\n\n<li>Personnel non form\u00e9 aux cyber-risques,<\/li>\n\n\n\n<li>Budget cybers\u00e9curit\u00e9 quasi inexistant.<\/li>\n<\/ul>\n\n\n\n<p>Un simple clic sur une pi\u00e8ce jointe pi\u00e9g\u00e9e avait suffi \u00e0 tout paralyser.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Une r\u00e9alit\u00e9 qui ne concerne pas que les autres<\/h2>\n\n\n\n<p>Selon <strong>Cybermalveillance.gouv.fr<\/strong> :<\/p>\n\n\n\n<ul>\n<li>Les attaques par phishing ciblant les \u00e9coles ont augment\u00e9 de <strong>75 % en 2025<\/strong>.<\/li>\n\n\n\n<li>Dans 30 % des cas, l\u2019hame\u00e7onnage reste la cause principale.<\/li>\n\n\n\n<li>62 % des \u00e9tablissements secondaires touch\u00e9s ont pay\u00e9 la ran\u00e7on.<\/li>\n<\/ul>\n\n\n\n<p>Le Coll\u00e8ge Saint-Jacques illustre un fait incontournable : les \u00e9coles sont devenues des cibles privil\u00e9gi\u00e9es des cybercriminels.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment prot\u00e9ger son \u00e9tablissement scolaire ?<\/h2>\n\n\n\n<p>La pr\u00e9vention reste la meilleure arme :<\/p>\n\n\n\n<ul>\n<li><strong>Prot\u00e9ger tous les postes et serveurs<\/strong> avec une solution fiable comme <strong><a href=\"https:\/\/www.antivirusedition.com\/avast_essential_business_security.php\">Avast Essential Business Security<\/a><\/strong>,<\/li>\n\n\n\n<li><strong>Centraliser la gestion<\/strong> avec <strong>Avast Business Hub<\/strong>,<\/li>\n\n\n\n<li><strong>Former le personnel<\/strong> aux bonnes pratiques face aux cyberattaques,<\/li>\n\n\n\n<li><strong>Planifier des sauvegardes r\u00e9guli\u00e8res<\/strong> et tester leur efficacit\u00e9.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\ud83d\udc49 Ne laissez pas votre \u00e9cole revivre ce cauchemar.<br>Contactez-nous d\u00e8s aujourd\u2019hui pour s\u00e9curiser votre \u00e9tablissement :<br>\ud83d\udce7 <a>contact@avastedition.com<\/a><br>\ud83c\udf10 <a href=\"https:\/\/www.antivirusedition.com\/\">antivirusedition.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"qua-blog-post-description\">Une matin\u00e9e qui tourne au cauchemar Un lundi de janvier, le Coll\u00e8ge Saint-Jacques se pr\u00e9parait \u00e0 entamer une semaine ordinaire. Professeurs, \u00e9l\u00e8ves et personnel administratif utilisaient l\u2019ENT (Espace Num\u00e9rique de Travail) pour g\u00e9rer leurs cours, devoirs et bulletins scolaires. \u00c0 8h17, tout s\u2019est arr\u00eat\u00e9. Un \u00e9cran noir affichant un message rouge gla\u00e7ant est apparu sur [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"sfsi_plus_gutenberg_text_before_share":"","sfsi_plus_gutenberg_show_text_before_share":"","sfsi_plus_gutenberg_icon_type":"","sfsi_plus_gutenberg_icon_alignemt":"","sfsi_plus_gutenburg_max_per_row":""},"categories":[1],"tags":[],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement - Blog Avast Antivirus<\/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:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement - Blog Avast Antivirus\" \/>\n<meta property=\"og:description\" content=\"Une matin\u00e9e qui tourne au cauchemar Un lundi de janvier, le Coll\u00e8ge Saint-Jacques se pr\u00e9parait \u00e0 entamer une semaine ordinaire. Professeurs, \u00e9l\u00e8ves et personnel administratif utilisaient l\u2019ENT (Espace Num\u00e9rique de Travail) pour g\u00e9rer leurs cours, devoirs et bulletins scolaires. \u00c0 8h17, tout s\u2019est arr\u00eat\u00e9. Un \u00e9cran noir affichant un message rouge gla\u00e7ant est apparu sur [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html\" \/>\n<meta property=\"og:site_name\" content=\"Blog Avast Antivirus\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-24T07:37:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-24T07:38:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles-1024x1024.png\" \/>\n<meta name=\"author\" content=\"La r\u00e9daction\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"La r\u00e9daction\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html\",\"url\":\"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html\",\"name\":\"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement - Blog Avast Antivirus\",\"isPartOf\":{\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/#website\"},\"datePublished\":\"2025-09-24T07:37:00+00:00\",\"dateModified\":\"2025-09-24T07:38:02+00:00\",\"author\":{\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/#\/schema\/person\/a54a4f38b10ec1a05165b83d04497ced\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.antivirusedition.com\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/#website\",\"url\":\"https:\/\/www.antivirusedition.com\/blog\/\",\"name\":\"Blog Avast Antivirus\",\"description\":\"Un site utilisant WordPress\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.antivirusedition.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/#\/schema\/person\/a54a4f38b10ec1a05165b83d04497ced\",\"name\":\"La r\u00e9daction\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.antivirusedition.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/e6755335dcf2cb437433135e9ceb6c74?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/e6755335dcf2cb437433135e9ceb6c74?s=96&d=mm&r=g\",\"caption\":\"La r\u00e9daction\"},\"url\":\"https:\/\/www.antivirusedition.com\/blog\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement - Blog Avast Antivirus","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html","og_locale":"fr_FR","og_type":"article","og_title":"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement - Blog Avast Antivirus","og_description":"Une matin\u00e9e qui tourne au cauchemar Un lundi de janvier, le Coll\u00e8ge Saint-Jacques se pr\u00e9parait \u00e0 entamer une semaine ordinaire. Professeurs, \u00e9l\u00e8ves et personnel administratif utilisaient l\u2019ENT (Espace Num\u00e9rique de Travail) pour g\u00e9rer leurs cours, devoirs et bulletins scolaires. \u00c0 8h17, tout s\u2019est arr\u00eat\u00e9. Un \u00e9cran noir affichant un message rouge gla\u00e7ant est apparu sur [&hellip;]","og_url":"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html","og_site_name":"Blog Avast Antivirus","article_published_time":"2025-09-24T07:37:00+00:00","article_modified_time":"2025-09-24T07:38:02+00:00","og_image":[{"url":"https:\/\/www.antivirusedition.com\/blog\/wp-content\/uploads\/2025\/09\/Cyber-attaque-Ecoles-1024x1024.png"}],"author":"La r\u00e9daction","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"La r\u00e9daction","Dur\u00e9e de lecture estim\u00e9e":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html","url":"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html","name":"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement - Blog Avast Antivirus","isPartOf":{"@id":"https:\/\/www.antivirusedition.com\/blog\/#website"},"datePublished":"2025-09-24T07:37:00+00:00","dateModified":"2025-09-24T07:38:02+00:00","author":{"@id":"https:\/\/www.antivirusedition.com\/blog\/#\/schema\/person\/a54a4f38b10ec1a05165b83d04497ced"},"breadcrumb":{"@id":"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.antivirusedition.com\/blog\/panique-au-college-quand-une-cyberattaque-paralyse-tout-un-etablissement-1748.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.antivirusedition.com\/blog"},{"@type":"ListItem","position":2,"name":"Panique au coll\u00e8ge : quand une cyberattaque paralyse tout un \u00e9tablissement"}]},{"@type":"WebSite","@id":"https:\/\/www.antivirusedition.com\/blog\/#website","url":"https:\/\/www.antivirusedition.com\/blog\/","name":"Blog Avast Antivirus","description":"Un site utilisant WordPress","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.antivirusedition.com\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/www.antivirusedition.com\/blog\/#\/schema\/person\/a54a4f38b10ec1a05165b83d04497ced","name":"La r\u00e9daction","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.antivirusedition.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/e6755335dcf2cb437433135e9ceb6c74?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/e6755335dcf2cb437433135e9ceb6c74?s=96&d=mm&r=g","caption":"La r\u00e9daction"},"url":"https:\/\/www.antivirusedition.com\/blog\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/posts\/1748"}],"collection":[{"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/comments?post=1748"}],"version-history":[{"count":2,"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/posts\/1748\/revisions"}],"predecessor-version":[{"id":1770,"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/posts\/1748\/revisions\/1770"}],"wp:attachment":[{"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/media?parent=1748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/categories?post=1748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.antivirusedition.com\/blog\/wp-json\/wp\/v2\/tags?post=1748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}