{"id":13599,"date":"2020-05-27T11:06:51","date_gmt":"2020-05-27T11:06:51","guid":{"rendered":"https:\/\/ebrandservices.fr\/?p=13599"},"modified":"2024-07-15T12:34:00","modified_gmt":"2024-07-15T12:34:00","slug":"lusurpation-didentite-la-technique-preferee-des-pirates","status":"publish","type":"post","link":"https:\/\/ebrand.com\/fr\/blog\/lusurpation-didentite-la-technique-preferee-des-pirates\/","title":{"rendered":"L\u2019USURPATION D\u2019IDENTIT\u00c9, LA TECHNIQUE PR\u00c9F\u00c9R\u00c9E DES PIRATES !"},"content":{"rendered":"<h2><strong>Cit\u00e9e 4 fois dans le Top 5 du r\u00e9cent barom\u00e8tre Euler-Herm\u00e8s \u2013 DFCG, l\u2019usurpation d\u2019identit\u00e9 arrive en t\u00eate des techniques utilis\u00e9es par les pirates obstin\u00e9s qui multiplient les attaques pour arriver \u00e0 leurs fins. Quelles formes prend-elle\u00a0? Peut-on s\u2019en pr\u00e9munir\u00a0? Explications\u2026<\/strong><\/h2>\n<p>Les entreprises craignent la fraude et notamment la cyberfraude. Il y de quoi\u00a0car les chiffres sont \u00e9loquents. D\u2019apr\u00e8s l\u2019\u00e9tude r\u00e9alis\u00e9e par Euler-Herm\u00e8s (leader de l\u2019assurance fraude) et l\u2019Association nationale des Directeurs Financiers et de Contr\u00f4le de Gestion (DFCG) aupr\u00e8s de plus de 200 entreprises implant\u00e9es en France\u00a0:<\/p>\n<ul>\n<li>plus de <strong>7 entreprises sur 10<\/strong> ont \u00e9t\u00e9 victimes d\u2019au moins une tentative de fraude\u00a0;<\/li>\n<li><strong>29 % des r\u00e9pondants ont subi plus de 5 tentatives<\/strong> (24 % en 2018)\u00a0;<\/li>\n<li><strong>27 % des entreprises interrog\u00e9es ont subi au moins une fraude av\u00e9r\u00e9e<\/strong> (26 % en 2018).<\/li>\n<\/ul>\n<p>Parmi les types de fraude affectant les entreprises, <strong>l\u2019usurpation d\u2019identit\u00e9 se d\u00e9tache singuli\u00e8rement<\/strong>\u00a0; elle suppose une bonne connaissance de l\u2019entreprise cibl\u00e9e, gr\u00e2ce \u00e0 la somme de renseignements collect\u00e9s par les escrocs, et peut prendre diff\u00e9rentes formes\u00a0:<\/p>\n<h2><strong>LA FRAUDE AU FAUX FOURNISSEUR<\/strong><\/h2>\n<p>Cit\u00e9e par <strong>48 % des entreprises<\/strong>, elle d\u00e9passe la fraude au faux pr\u00e9sident depuis 2018. Il s\u2019agit d\u2019une attaque par ing\u00e9nierie sociale, appel\u00e9e parfois <em>\u00ab\u00a0science du piratage humain\u00a0\u00bb<\/em>, qui permet de <strong>manipuler<\/strong> un individu en invoquant, par exemple, le caract\u00e8re d\u2019urgence d\u2019une action. Le principe est on ne peut plus simple\u00a0: le fraudeur, se faisant passer pour un fournisseur de l\u2019entreprise, signale au service comptable un changement de compte bancaire destin\u00e9 au r\u00e8glement des factures. Ni vu ni connu jusqu\u2019au moment o\u00f9 le vrai fournisseur r\u00e9clame les sommes qui lui sont dues\u2026 Un exemple\u00a0? Celui de l\u2019entreprise Michelin, victime en 2014 d\u2019une arnaque \u00e0 hauteur de <strong>1,6 millions d\u2019euros<\/strong>, comme le rapporte <a href=\"https:\/\/www.capital.fr\/economie-politique\/la-derniere-combine-des-fraudeurs-pour-voler-des-millions-aux-entreprises-975172\">Capital.fr<\/a>. Pourtant, dans ce cas, un simple appel aupr\u00e8s du fournisseur afin de v\u00e9rifier ses coordonn\u00e9es bancaires aurait suffi \u00e0 \u00e9viter le pi\u00e8ge tendu.<\/p>\n<h2><strong>LA FRAUDE AU FAUX PR\u00c9SIDENT<\/strong><\/h2>\n<p>Cit\u00e9e par<strong> 38 % des entreprises<\/strong>, et en progression \u00e9galement, elle utilise les m\u00eames ressorts. Elle consiste \u00e0 convaincre le collaborateur d&rsquo;une entreprise d\u2019ob\u00e9ir \u00e0 un pr\u00e9tendu ordre du dirigeant. Le plus souvent, il s\u2019agit d&rsquo;effectuer en urgence un virement important \u00e0 un tiers sous pr\u00e9texte d&rsquo;une dette \u00e0 r\u00e9gler, d\u2019une provision \u00e0 verser sur un contrat en cours ou autre. \u00c7a peut aller loin, comme le prouve la fraude, rapport\u00e9e par notre confr\u00e8re <a href=\"http:\/\/www.leparisien.fr\/faits-divers\/pathe-victime-d-une-fraude-de-plus-de-19-millions-d-euros-10-11-2018-7939638.php\">Le Parisien<\/a>, ayant vis\u00e9 en 2018 le groupe de cin\u00e9ma Path\u00e9 via sa filiale aux Pays-Bas\u00a0: les fraudeurs ont r\u00e9ussi \u00e0 convaincre le directeur financier et la directrice de la filiale de transf\u00e9rer <strong>19,2 millions d\u2019euros<\/strong> destin\u00e9s \u00e0 financer une pr\u00e9tendue acquisition \u00e0 Duba\u00ef. Le moyen utilis\u00e9\u00a0: des <strong>emails envoy\u00e9s depuis une fausse adresse \u00e9lectronique\u00a0<\/strong>semblant provenir de la direction du Groupe\u00a0!<\/p>\n<h2><strong>LA FRAUDE AU FAUX \u00a0CLIENT <\/strong><\/h2>\n<p>Cit\u00e9e par <strong>24 % des entreprises,<\/strong>\u00a0elle\u00ab\u00a0consiste \u00e0 d\u00e9tourner de la marchandise en se faisant passer pour un prospect ou un client\u00a0\u00bb, lit-on sur <a href=\"https:\/\/blog.eulerhermes.fr\/humour\/fraude-faux-client\/\">le blog Euler-Herm\u00e8s<\/a>. Elle est suffisamment fr\u00e9quente pour que la DGCCRF alerte les entreprises sur l\u2019existence de telles escroqueries. Car le mode op\u00e9ratoire des fraudeurs ne laisse rien au hasard\u00a0: le soi-disant client fournit les coordonn\u00e9es d\u2019un distributeur, fran\u00e7ais ou \u00e9tranger, dont l\u2019identit\u00e9 a \u00e9t\u00e9 usurp\u00e9e, ainsi que les documents susceptibles de mettre le vendeur en confiance (extrait K-Bis, compte bancaire\u2026). Il ne lui reste qu\u2019\u00e0 passer une grosse commande payable \u00e0 30 ou 45 jours apr\u00e8s r\u00e9ception. Payable oui, mais\u2026<\/p>\n<p>Parmi les autres fraudes cit\u00e9es par <strong>31 % des entreprises<\/strong>, se trouvent celles aux banques, aux avocats, aux commissaires aux comptes\u2026\u00a0Ces usurpations sont loin d\u2019\u00eatre les seules, et de nombreuses administrations en font r\u00e9guli\u00e8rement les frais, comme nous le rappelions dans <a href=\"https:\/\/ebrandservices.fr\/cyberattaques-les-services-publics-dans-la-ligne-de-mire\/\">HACKING : LES SERVICES PUBLICS DANS LA LIGNE DE MIRE<\/a>.<\/p>\n<h2><strong>LES CONSEILS D\u2019EXPERT\u00a0: LA PR\u00c9VENTION !<\/strong><\/h2>\n<p>D\u00e9jouer ce type de fraude rel\u00e8ve essentiellement de mesures de bon sens qu\u2019on a tous tendance \u00e0 n\u00e9gliger\u00a0par manque de temps, surcharge de travail ou simple fatigue\u2026 Pourtant l\u2019humain n\u2019est pas seul en cause. Aussi \u00e9labor\u00e9e soit-elle, l\u2019usurpation d\u2019identit\u00e9 repose la plupart du temps sur un faux nom de domaine (typosquatting), une fausse adresse\u00a0mail (phishing), un faux profil r\u00e9seaux sociaux, un faux site web, une fausse annonce (places de march\u00e9), une fausse facture\u2026 Autant de \u00ab\u00a0faux\u00a0\u00bb qu&rsquo;il est possible d&rsquo;anticiper en appliquant ces mesures pr\u00e9ventives :<\/p>\n<h3><strong>1. QUAND VIGILANCE RIME AVEC SURVEILLANCE<\/strong><\/h3>\n<p>De nos jours, ne pas surveiller Internet revient \u00e0 conduire sans ceinture de s\u00e9curit\u00e9\u00a0!\u00a0Au sein de l\u2019entreprise, le premier geste de pr\u00e9vention consiste donc \u00e0 d\u00e9tecter ces faux avant qu\u2019ils ne soient exploit\u00e9s par les escrocs\u00a0: <strong>surveillez<\/strong> les d\u00e9p\u00f4ts de noms de domaine, <strong>d\u00e9tectez<\/strong> l\u2019activation d\u2019adresses mail et <strong>ajoutez<\/strong> syst\u00e9matiquement \u00e0 <strong>la liste noire<\/strong> de votre syst\u00e8me informatique les noms frauduleux identifi\u00e9s. Rappelons qu\u2019une <a href=\"https:\/\/ebrandservices.fr\/services\/x-ray-radar\/\">surveillance de noms de domaine identique ou contenant une marque<\/a> co\u00fbte moins de 250 \u20acHT par mois, un \u00ab\u00a0budget s\u00e9curit\u00e9 des noms de de domaine\u00a0\u00bb relativement modeste eu \u00e9gard aux risques encourus. En effet, s\u2019en passer peut co\u00fbter tr\u00e8s cher \u00e0 l\u2019entreprise comme en t\u00e9moignent les exemples que nous avons cit\u00e9s.<\/p>\n<p>Attention toutefois \u00e0 <strong>ne pas confondre<\/strong> surveillance de noms de domaine et surveillance de marques\u00a0: il s\u2019agit de deux services diff\u00e9rents, <strong>compl\u00e9mentaires<\/strong> et <strong>non substituables l\u2019un \u00e0 l\u2019autre<\/strong>.<\/p>\n<h3><strong>2. QUAND URGENCE RIME AVEC M\u00c9FIANCE<\/strong><\/h3>\n<p>L\u2019urgence de la demande doit alerter, davantage encore lorsqu\u2019elle arrive le vendredi soir \u00e0 18 h 00. Il est d\u2019autant plus imp\u00e9ratif de prendre le temps d\u2019effectuer les v\u00e9rifications qui s\u2019imposent et de respecter les proc\u00e9dures internes mises en place, quelle que soit l\u2019urgence ou la confidentialit\u00e9 invoqu\u00e9e. Cette v\u00e9rification doit prendre la forme de\u00a0:<\/p>\n<ul>\n<li>Un <strong>contre-appel<\/strong> aupr\u00e8s du partenaire commercial ou financier,<strong> en utilisant les coordonn\u00e9es figurant dans le fichier interne de l\u2019entreprise<\/strong>\u00a0;<\/li>\n<li>Une<strong> consultation des factures ant\u00e9rieures<\/strong> en cas de rappel pour non-paiement\u00a0et une <strong>v\u00e9rification syst\u00e9matique des coordonn\u00e9es bancaires<\/strong> avant de proc\u00e9der \u00e0 tout r\u00e8glement\u00a0;<\/li>\n<li>Une <strong>contre-validation orale et de visu<\/strong> aupr\u00e8s de sa hi\u00e9rarchie (les outils de visio-conf\u00e9rence s\u2019y pr\u00eatent fort bien, m\u00eame et surtout en t\u00e9l\u00e9travail).<\/li>\n<\/ul>\n<h3><strong>3. QUAND CONNEXION RIME AVEC DOUBLE AUTHENTIFICATION<\/strong><\/h3>\n<p>Oui, une proc\u00e9dure de validation des ordres (financiers, d\u2019achat ou de livraison) doit \u00eatre clairement d\u00e9finie et respect\u00e9e au sein de l\u2019entreprise. Peu importe sa taille.\u00a0Activez <strong>l\u2019authentification \u00e0 deux facteurs<\/strong>\u00a0(aussi appel\u00e9e Validation \u00e0 deux \u00e9tapes ou Authentification \u00e0 deux facteurs) partout o\u00f9 c\u2019est possible\u00a0et notamment\u00a0pour acc\u00e9der aux interfaces bancaires, registrar, fournisseurs\u2026 Celle-ci permet de renforcer la s\u00e9curit\u00e9 de la connexion \u00e0 votre compte en ligne en ajoutant une \u00e9tape de validation compl\u00e9mentaire. Ainsi la r\u00e9ception d\u2019un code unique sur votre smartphone compl\u00e8te le traditionnel couple \u00ab\u00a0nom d\u2019utilisateur-mot de passe\u00a0\u00bb. Pour en savoir plus sur la double authentification, lire notre article <a href=\"https:\/\/ebrandservices.fr\/protegez-lacces-a-votre-compte-registrar-grace-a-lauthentification-a-deux-facteurs\/?preview_id=13505&amp;preview_nonce=4b0cfa45e4&amp;post_format=standard&amp;_thumbnail_id=13516&amp;preview=true\">PROTEGEZ L\u2019ACC\u00c9S \u00c0 VOTRE COMPTE REGISTRAR GR\u00c2CE \u00c0 L\u2019AUTHENTIFICATION \u00c0 DEUX FACTEURS<\/a>.<\/p>\n<h3><strong>4. QUAND SENSIBILISATION RIME AVEC COMMUNICATION<\/strong><\/h3>\n<p>Les collaborateurs de l\u2019entreprise doivent \u00eatre conscients que celle-ci peut \u00eatre \u00e0 tout moment victime d\u2019une tentative d\u2019escroquerie. Ainsi vous devez <strong>communiquer sur l\u2019importance des proc\u00e9dures<\/strong> et pr\u00e9senter des exemples concrets de fraude. Relayer en interne les articles qui en parlent est un bon r\u00e9flexe. <strong>Chefs d\u2019entreprise et cadres dirigeants doivent \u00eatre les premiers \u00e0 respecter les proc\u00e9dures<\/strong> m\u00eame si celles-ci sont contraignantes.<\/p>\n<p>Sans \u00eatre exhaustifs, ces conseils permettent de limiter les risques d\u2019incidents. N\u2019h\u00e9sitez pas impliquer tous les services de l\u2019entreprise afin d\u2019identifier les potentiels points sensibles li\u00e9s \u00e0 votre activit\u00e9.<\/p>\n<p><em>Par Rapha\u00ebl TESSIER et Sophie AUDOUSSET<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cit\u00e9e 4 fois dans le Top 5 du r\u00e9cent barom\u00e8tre Euler-Herm\u00e8s \u2013 DFCG, l\u2019usurpation d\u2019identit\u00e9 arrive en t\u00eate des techniques utilis\u00e9es par les pirates obstin\u00e9s qui multiplient les attaques pour arriver \u00e0 leurs fins. Quelles formes prend-elle\u00a0? Peut-on s\u2019en pr\u00e9munir\u00a0? Explications\u2026 Les entreprises craignent la fraude et notamment la cyberfraude. Il y de quoi\u00a0car les [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":42601,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[900,685,897],"tags":[],"class_list":["post-13599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-contrefacon","category-cybersecurite","category-cybersquatting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>L\u2019USURPATION D\u2019IDENTIT\u00c9, LA TECHNIQUE PR\u00c9F\u00c9R\u00c9E DES PIRATES ! - EBRAND<\/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:\/\/ebrand.com\/fr\/blog\/lusurpation-didentite-la-technique-preferee-des-pirates\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019USURPATION D\u2019IDENTIT\u00c9, LA TECHNIQUE PR\u00c9F\u00c9R\u00c9E DES PIRATES !\" \/>\n<meta property=\"og:description\" content=\"Cit\u00e9e 4 fois dans le Top 5 du r\u00e9cent barom\u00e8tre Euler-Herm\u00e8s \u2013 DFCG, l\u2019usurpation d\u2019identit\u00e9 arrive en t\u00eate des techniques utilis\u00e9es par les pirates obstin\u00e9s qui multiplient les attaques pour arriver \u00e0 leurs fins. Quelles formes prend-elle\u00a0? Peut-on s\u2019en pr\u00e9munir\u00a0? Explications\u2026 Les entreprises craignent la fraude et notamment la cyberfraude. 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