{"id":84069,"date":"2026-06-05T09:40:00","date_gmt":"2026-06-05T07:40:00","guid":{"rendered":"https:\/\/www.codeur.com\/blog\/?p=84069"},"modified":"2026-06-05T09:40:02","modified_gmt":"2026-06-05T07:40:02","slug":"ameliorer-cybersecurite-tpe-pme","status":"publish","type":"post","link":"https:\/\/www.codeur.com\/blog\/ameliorer-cybersecurite-tpe-pme\/","title":{"rendered":"Comment am\u00e9liorer la cybers\u00e9curit\u00e9 de votre TPE \/ PME&nbsp;?"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.quai-alpha.com\/tpe-pme-vous-etes-les-cibles-privilegiees-des-hackers\/\" target=\"_blank\" rel=\"noreferrer noopener\">43 % des cyberattaques ciblent les TPE et PME<\/a>, entra\u00eenant des pertes financi\u00e8res moyennes de 58 600 \u20ac par incident. Ces chiffres alarmants soulignent l&#8217;importance de renforcer la cybers\u00e9curit\u00e9 des petites entreprises, souvent per\u00e7ues comme des cibles faciles par les hackers.<\/p>\n\n\n\n<p>Cet article explore les enjeux et les risques li\u00e9s \u00e0 la s\u00e9curit\u00e9 informatique pour les structures restreintes, et propose des actions essentielles \u00e0 mettre en \u0153uvre pour prot\u00e9ger votre entreprise contre les menaces en ligne.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les risques cybers\u00e9curit\u00e9 pour les PME et TPE<\/h2>\n\n\n\n<p>Les petites entreprises repr\u00e9sentent une cible privil\u00e9gi\u00e9e pour les cybercriminels. En 2023, <a href=\"https:\/\/www.lemagit.fr\/conseil\/Combien-de-PME-mettent-la-cle-sous-la-porte-apres-une-cyberattaque#:~:text=Mi%2Doctobre%202023%2C%20David%20Glijer,%C3%A0%20l'automne%202022.\" target=\"_blank\" rel=\"noreferrer noopener\">60 % des petites entreprises ayant subi une cyberattaque<\/a> ont ferm\u00e9 d\u00e9finitivement dans les six mois suivants. Les types d&#8217;attaques les plus fr\u00e9quentes incluent le phishing, les ransomwares et les fuites de donn\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Phishing<\/h3>\n\n\n\n<p>Le phishing consiste \u00e0 tromper les employ\u00e9s pour qu&#8217;ils r\u00e9v\u00e8lent des informations sensibles, souvent via des emails ou SMS frauduleux. Ces attaques peuvent conduire \u00e0 des violations de donn\u00e9es et des pertes financi\u00e8res consid\u00e9rables.<\/p>\n\n\n\n<p>Un exemple notable est celui de Tangerine Telecom. En 2023, l\u2019entreprise a connu une importante fuite de donn\u00e9es apr\u00e8s que des identifiants de connexion aient \u00e9t\u00e9 compromis. Une attaque qui a expos\u00e9 les informations personnelles de plus de 200 000 clients.<\/p>\n\n\n\n<p>Cet incident a non seulement menac\u00e9 la s\u00e9curit\u00e9 des donn\u00e9es clients, mais \u00e9galement soulev\u00e9 des inqui\u00e9tudes quant \u00e0 la protection de la vie priv\u00e9e. De plus, la confiance des consommateurs envers l&#8217;entreprise s\u2019est \u00e9rod\u00e9e.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ransomware<\/h3>\n\n\n\n<p>Les ransomwares cryptent les donn\u00e9es de l&#8217;entreprise afin d\u2019exiger une ran\u00e7on pour leur restitution. Ces attaques paralysent g\u00e9n\u00e9ralement les op\u00e9rations et entra\u00eenent des pertes financi\u00e8res majeures.<\/p>\n\n\n\n<p>En f\u00e9vrier 2024, le fabricant de batteries VARTA a \u00e9t\u00e9 frapp\u00e9 par une cyberattaque qui a paralys\u00e9 la production dans cinq de ses usines. Cet exemple illustre la vuln\u00e9rabilit\u00e9 des infrastructures industrielles et les r\u00e9percussions majeures que peuvent avoir les failles de cybers\u00e9curit\u00e9 sur la continuit\u00e9 des op\u00e9rations commerciales. Affecter directement la capacit\u00e9 de production g\u00e9n\u00e8re souvent des cons\u00e9quences n\u00e9gatives sur les relations clients et impacte les revenus de l&#8217;entreprise.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fuites de donn\u00e9es<\/h3>\n\n\n\n<p>Les fuites de donn\u00e9es se produisent souvent en raison de configurations inad\u00e9quates des syst\u00e8mes ou des interfaces API.<\/p>\n\n\n\n<p>En avril 2019, Facebook a subi une fuite massive, o\u00f9 les donn\u00e9es de pr\u00e8s de 540 millions d&#8217;utilisateurs ont \u00e9t\u00e9 expos\u00e9es sur des serveurs Amazon S3, mal configur\u00e9s par des d\u00e9veloppeurs tiers.<\/p>\n\n\n\n<p>En 2023, Trello s\u2019est retrouv\u00e9 dans la tourmente \u00e0 cause d\u2019une configuration erron\u00e9e de l&#8217;API publique de l\u2019outil. La faille a permis l&#8217;exposition non autoris\u00e9e d&#8217;informations sensibles de 15 millions de comptes.<\/p>\n\n\n\n<p>Plus r\u00e9cemment, la CNIL a ouvert une enqu\u00eate suite \u00e0 la violation de donn\u00e9es de deux op\u00e9rateurs de tiers payant en France (Viamedis et Almerys). Une cyberattaque r\u00e9sultante de mauvaises configurations des syst\u00e8mes et d&#8217;un manque de mesures de protection ad\u00e9quates, qui a d\u00e9voil\u00e9 les renseignements personnels et m\u00e9dicaux de millions d&#8217;assur\u00e9s.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les actions essentielles pour am\u00e9liorer la cybers\u00e9curit\u00e9 de votre TPE \/ PME&nbsp;<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"550\" src=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme.jpg\" alt=\"cybers\u00e9curit\u00e9 pme tpe\" class=\"wp-image-84071\" srcset=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme.jpg 1000w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme-300x165.jpg 300w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme-768x422.jpg 768w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme-60x33.jpg 60w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme-370x204.jpg 370w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme-270x149.jpg 270w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme-570x314.jpg 570w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2024\/08\/ameliorer-cybersecurite-tpe-pme-740x407.jpg 740w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>Comme nous l\u2019avons d\u00e9montr\u00e9 pr\u00e9c\u00e9demment, les cons\u00e9quences d&#8217;une cyberattaque incluent la perte de donn\u00e9es sensibles, des interruptions d&#8217;activit\u00e9 prolong\u00e9es et des co\u00fbts \u00e9lev\u00e9s de nettoyage.<\/p>\n\n\n\n<p>Prot\u00e9ger les informations sensibles de vos clients et employ\u00e9s est donc primordial pour assurer la continuit\u00e9 des activit\u00e9s et renforcer la r\u00e9putation de l&#8217;entreprise.<\/p>\n\n\n\n<p>Voici les principales bonnes pratiques \u00e0 adopter pour am\u00e9liorer la cybers\u00e9curit\u00e9 de votre TPE \/ PME&nbsp;:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sensibiliser et former le personnel<\/h3>\n\n\n\n<p>Former les employ\u00e9s aux bonnes pratiques de s\u00e9curit\u00e9 est une priorit\u00e9. Les programmes de sensibilisation r\u00e9guliers aident \u00e0 pr\u00e9venir les menaces comme le phishing et les malwares. Des ateliers et des sessions de formation rendent les employ\u00e9s conscients des risques et des mesures \u00e0 prendre pour se prot\u00e9ger et prot\u00e9ger l&#8217;entreprise.<\/p>\n\n\n\n<p>Un <a href=\"https:\/\/www.codeur.com\/consultant\/securite\">consultant en cybers\u00e9curit\u00e9<\/a> peut intervenir dans votre entreprise pour sensibiliser vos \u00e9quipes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mettre \u00e0 jour r\u00e9guli\u00e8rement les logiciels et syst\u00e8mes<\/h3>\n\n\n\n<p>Les mises \u00e0 jour r\u00e9guli\u00e8res des logiciels et des syst\u00e8mes comblent les vuln\u00e9rabilit\u00e9s et emp\u00eachent l&#8217;exploitation des failles. Automatiser les mises \u00e0 jour, utiliser un pare-feu et installer des logiciels antivirus modernes renforcent la protection et minimisent les risques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Utiliser des mots de passe forts<\/h3>\n\n\n\n<p>Des mots de passe robustes et uniques pour chaque compte sont essentiels pour am\u00e9liorer la cybers\u00e9curit\u00e9 de votre TPE \/ PME. Utiliser des gestionnaires de mots de passe aide \u00e0 cr\u00e9er et \u00e0 g\u00e9rer ces identifiants complexes. De plus, un changement r\u00e9gulier (tous les 30 \u00e0 90 jours, par exemple) des mots de passe renforce la lutte contre le piratage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Activer l&#8217;authentification \u00e0 deux facteurs<\/h3>\n\n\n\n<p>Par ailleurs, pensez \u00e0 activer l&#8217;authentification \u00e0 deux facteurs (2FA) pour ajouter une couche de s\u00e9curit\u00e9 suppl\u00e9mentaire. Cette bonne pratique rend plus difficile l&#8217;acc\u00e8s non autoris\u00e9 \u00e0 votre infrastructure r\u00e9seau, \u00e0 vos applications et outils internes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sauvegarder r\u00e9guli\u00e8rement vos donn\u00e9es<\/h3>\n\n\n\n<p>Les sauvegardes r\u00e9guli\u00e8res des donn\u00e9es permettent une r\u00e9cup\u00e9ration rapide apr\u00e8s une \u00e9ventuelle cyberattaque. Il est recommand\u00e9 de r\u00e9aliser des backups fr\u00e9quents et de diversifier les solutions de stockage (cloud et local) pour vous assurer que les donn\u00e9es critiques sont prot\u00e9g\u00e9es et r\u00e9cup\u00e9rables en cas de sinistre.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u00e9curiser les r\u00e9seaux Wi-Fi<\/h3>\n\n\n\n<p>Utiliser des mots de passe complexes pour les r\u00e9seaux Wi-Fi et changer r\u00e9guli\u00e8rement les acc\u00e8s renforcent la protection contre les cyberattaques. C\u00f4t\u00e9 chiffrement, pr\u00e9f\u00e9rez le WPA3 qui offre une protection avanc\u00e9e contre les intrusions.<\/p>\n\n\n\n<p>Si votre entreprise accueille du public, vous pouvez aussi segmenter les r\u00e9seaux, en cr\u00e9ant, par exemple, un r\u00e9seau invit\u00e9 distinct du Wi-Fi interne.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Surveillez activement les intrusions<\/h3>\n\n\n\n<p>La surveillance active des r\u00e9seaux et syst\u00e8mes permet de d\u00e9tecter rapidement les comportements anormaux et les tentatives de piratage. Il est conseill\u00e9 d\u2019utiliser des syst\u00e8mes de d\u00e9tection d&#8217;intrusions (IDS), souvent plus r\u00e9actifs et efficaces que les antivirus simples, pour alerter les administrateurs en cas d\u2019activit\u00e9 suspecte.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mettre en place de politiques de s\u00e9curit\u00e9<\/h3>\n\n\n\n<p>Des politiques de s\u00e9curit\u00e9 claires et bien d\u00e9finies encadrent les comportements des employ\u00e9s et pr\u00e9viennent les failles de s\u00e9curit\u00e9. Ce r\u00e8glement peut inclure l\u2019interdiction des appareils personnels, les acc\u00e8s aux donn\u00e9es sensibles et les protocoles \u00e0 suivre en cas d&#8217;incident de s\u00e9curit\u00e9.<\/p>\n\n\n\n<p>Communiquez efficacement cette politique via des emails internes, mais aussi en l\u2019affichant dans chaque bureau et dans l\u2019open-space.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Notre dernier conseil pour am\u00e9liorer la cybers\u00e9curit\u00e9 de votre PME ou votre TPE<\/h2>\n\n\n\n<p>Am\u00e9liorer la cybers\u00e9curit\u00e9 de votre TPE \/ PME est un investissement indispensable pour prot\u00e9ger votre entreprise. En mettant en \u0153uvre les actions recommand\u00e9es dans cet article et en restant vigilant, vous pouvez r\u00e9duire significativement les risques.<\/p>\n\n\n\n<p>Un dernier conseil&nbsp;: faites appel \u00e0 un consultant en cybers\u00e9curit\u00e9 sur notre plateforme de freelances, <a href=\"https:\/\/www.codeur.com\/consultant\/securite\" target=\"_blank\" rel=\"noreferrer noopener\">Codeur.com<\/a>. Il vous aidera \u00e0 identifier les vuln\u00e9rabilit\u00e9s sp\u00e9cifiques de votre entreprise et \u00e0 mettre en place des mesures efficientes pour les corriger.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>43 % des cyberattaques ciblent les TPE et PME, entra\u00eenant des pertes financi\u00e8res moyennes de 58 600 \u20ac par incident. Ces chiffres alarmants soulignent l&#8217;importance de renforcer la cybers\u00e9curit\u00e9 des petites entreprises, souvent per\u00e7ues comme des cibles faciles par les hackers. Cet article explore les enjeux et les risques li\u00e9s \u00e0 la s\u00e9curit\u00e9 informatique pour [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":97560,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[16],"tags":[39],"class_list":["post-84069","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-securite","tag-conseils"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comment am\u00e9liorer la cybers\u00e9curit\u00e9 de votre TPE \/ PME ?<\/title>\n<meta name=\"description\" content=\"La cybers\u00e9curit\u00e9 des PME et des TPE est importante. 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