{"id":27274,"date":"2019-09-27T10:50:35","date_gmt":"2019-09-27T08:50:35","guid":{"rendered":"https:\/\/www.codeur.com\/blog\/?p=27274"},"modified":"2025-08-28T11:52:12","modified_gmt":"2025-08-28T09:52:12","slug":"alternatives-captcha","status":"publish","type":"post","link":"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/","title":{"rendered":"6 alternatives au CAPTCHA"},"content":{"rendered":"<p>Le Web se compose de milliards de sites Web. Et aux yeux des spammeurs, un site web est consid\u00e9r\u00e9 comme une opportunit\u00e9 de promotion gratuite d\u2019un produit.<br \/>\nDans la plupart des cas, les pourriels affecteront les sites Web qui n&#8217;ont pas \u00e9t\u00e9 correctement s\u00e9curis\u00e9s au pr\u00e9alable. Et il se trouve qu&#8217;il y a beaucoup de sites Web de ce genre. Les bots sont capables de trouver des sites web vuln\u00e9rables en utilisant des outils de recherche de sites web, et si votre site web est pourvu de quelque formulaire que ce soit, les bots vont se mettre \u00e0 spammer votre site imm\u00e9diatement.<br \/>\nNous avons tous rempli des dizaines de formulaires, cr\u00e9\u00e9 un compte sur un site, ou t\u00e9l\u00e9charg\u00e9 des fichiers. \u00a0Souvent, \u00e0 la fin de ce processus, nous passons tous par quelque chose appel\u00e9 CAPTCHA. Il se trouve que nous d\u00e9testons tous ce CAPTCHA.<\/p>\n<h2>Qu\u2019est-ce qu\u2019un CAPTCHA\u00a0?<\/h2>\n<p>CAPTCHA est un programme \/ syst\u00e8me qui distingue une action humaine de celle d\u2019une machine (d\u2019un robot). Les CAPTCHA sont comme des serrures de s\u00e9curit\u00e9 pour une grande partie de votre contenu. Pour qu&#8217;une personne puisse soumettre un commentaire, un formulaire, ou simplement s\u2019inscrire sur votre site, elle doit d&#8217;abord prouver qu&#8217;elle est humaine.<br \/>\nIl existe plusieurs syst\u00e8mes de CAPTCHA, dont les plus connus sont ceux utilisant des mots inscrits sur des images, plus ou moins lisibles, qu\u2019il faut entrer dans une case afin de valider le formulaire concern\u00e9. Dans certains cas, il faut r\u00e9soudre une op\u00e9ration math\u00e9matique.<br \/>\nLe ReCAPTCHA de Google est aujourd\u2019hui consid\u00e9r\u00e9 comme la meilleure solution anti-spam pour les formulaires. Cependant, il faut parfois jusqu\u2019\u00e0 30 secondes pour r\u00e9soudre un CAPTCHA, ce qui rend l\u2019exp\u00e9rience utilisateur d\u00e9plorable.<br \/>\nEssayons de trouver quelques alternatives \u00e0 cette m\u00e9thode&nbsp;!<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-27279\" src=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/captcha-compressor.jpg\" alt=\"Captcha\" width=\"700\" height=\"467\" \/><\/p>\n<h2>Le pot de miel (Honeypot)<\/h2>\n<p>Laissez-moi commencer par mon pr\u00e9f\u00e9r\u00e9&nbsp;: le pot de miel consiste \u00e0 duper le spambot, tout en \u00e9tant invisible pour l\u2019utilisateur humain. Comment \u00e7a marche&nbsp;?\u00a0 Prenons un formulaire \u00ab normal \u00bb, ajoutons un champ cach\u00e9 (que les utilisateurs ne peuvent pas voir). \u00a0Si le champ cach\u00e9 est rempli lors de la soumission du formulaire, cela signifie que c&#8217;est un bot, pas un humain. Les robots en effet remplissent syst\u00e9matiquement tous les champs qu\u2019ils trouvent, m\u00eame ceux qu\u2019une ligne de CSS a rendu invisible pour les humains.<\/p>\n<h2>Akismet<\/h2>\n<p>Lanc\u00e9 seulement deux ans apr\u00e8s WordPress, <a href=\"https:\/\/fr.wordpress.org\/plugins\/akismet\/\" target=\"_blank\" rel=\"noopener\">Askimet<\/a> n&#8217;a cess\u00e9 d&#8217;\u00e9voluer pour devenir le principal plugin de protection anti-spam pour WordPress. En fait, c&#8217;est le plugin de protection anti-spam par d\u00e9faut qui est fourni avec toutes les installations WordPress.<br \/>\nSi Akismet n&#8217;est pas en soi une v\u00e9ritable solution de CAPTCHA, il travaille sur la pr\u00e9vention du spam en coulisse. Les b\u00e9n\u00e9fices obtenus en l&#8217;ajoutant \u00e0 WordPress ne sont pas n\u00e9gligeables pour autant.<br \/>\nCes derni\u00e8res ann\u00e9es, Akismet a \u00e9volu\u00e9 vers un mod\u00e8le payant, mais il existe toujours une version gratuite pour les sites personnels.<br \/>\n<img decoding=\"async\" class=\"aligncenter size-full wp-image-27280\" src=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/akismet-compressor.jpg\" alt=\"Akismet\" width=\"700\" height=\"467\" srcset=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/akismet-compressor.jpg 700w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/akismet-compressor-300x200.jpg 300w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/akismet-compressor-370x247.jpg 370w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/akismet-compressor-270x180.jpg 270w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/akismet-compressor-570x380.jpg 570w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<h2>VisualCaptcha<\/h2>\n<p><a href=\"https:\/\/visualcaptcha.net\/\" target=\"_blank\" rel=\"noopener\">VisualCaptcha<\/a> est un syst\u00e8me orient\u00e9 visuellement qui se concentre sur une conception simple et une exp\u00e9rience utilisateur accessible. Techniquement, c\u2019est un CAPTCHA, je le mentionne tout de m\u00eame car il s\u2019agit d&#8217;un projet open-source. Vous pouvez donc \u00e9diter, modifier et faire tout le reste sans avoir besoin d&#8217;une licence commerciale.<br \/>\nIl est \u00e0 noter que VisualCaptcha a abandonn\u00e9 son d\u00e9veloppement. Cependant, le syst\u00e8me lui-m\u00eame est toujours pleinement fonctionnel, et la communaut\u00e9 a cr\u00e9\u00e9 de nombreux forks pour int\u00e9grer ce syst\u00e8me dans jQuery, Angular et autres biblioth\u00e8ques populaires.<br \/>\n<img decoding=\"async\" class=\"aligncenter size-full wp-image-27281\" src=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/visualcaptcha-compressor.jpg\" alt=\"VisualCaptcha\" width=\"700\" height=\"467\" srcset=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/visualcaptcha-compressor.jpg 700w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/visualcaptcha-compressor-300x200.jpg 300w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/visualcaptcha-compressor-370x247.jpg 370w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/visualcaptcha-compressor-270x180.jpg 270w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/visualcaptcha-compressor-570x380.jpg 570w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<h2>CleanTalk<\/h2>\n<p><a href=\"https:\/\/cleantalk.org\/\" target=\"_blank\" rel=\"noopener\">CleanTalk<\/a> s\u2019enorgueillit d&#8217;\u00eatre une solution universelle pour arr\u00eater le spam. Plut\u00f4t que de se compliquer la vie avec des param\u00e8tres individuels, le plugin fournit automatiquement une protection anti-spam pour vos formulaires les plus populaires.<br \/>\nInscription, Login, Commentaires, Contact, Formulaires de contact, eCommerce, et de nombreux formulaires de plugins sp\u00e9cifiques sont ainsi prot\u00e9g\u00e9s.<br \/>\nL&#8217;avantage ici est que CleanTalk n&#8217;impose aucune t\u00e2che suppl\u00e9mentaire \u00e0 l&#8217;utilisateur. Il fonctionne intuitivement en arri\u00e8re-plan \u00e0 l&#8217;aide d&#8217;un algorithme. Vous pouvez consulter toutes les tentatives de connexion et de soumission de formulaires.<br \/>\n<img decoding=\"async\" class=\"aligncenter size-full wp-image-27282\" src=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/cleantawlk-compressor.jpg\" alt=\"CleanTawlk\" width=\"700\" height=\"467\" srcset=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/cleantawlk-compressor.jpg 700w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/cleantawlk-compressor-300x200.jpg 300w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/cleantawlk-compressor-370x247.jpg 370w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/cleantawlk-compressor-270x180.jpg 270w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/cleantawlk-compressor-570x380.jpg 570w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<h2>Antispam Bee<\/h2>\n<p>Plus de 400 000 sites utilisent <a href=\"https:\/\/fr.wordpress.org\/plugins\/antispam-bee\/\" target=\"_blank\" rel=\"noopener\">Antispam Bee<\/a> sur leur site WordPress. Cela devrait suffire \u00e0 vous convaincre de la puissance de cet anti-spam. La principale raison pour laquelle les gens aiment tant ce plugin est son panneau de configuration tr\u00e8s facile d\u2019acc\u00e8s. Une fois le plugin activ\u00e9, vous pouvez simplement cocher ou d\u00e9cocher diff\u00e9rentes cases pour impl\u00e9menter des fonctions de s\u00e9curit\u00e9 dans votre site. Malheureusement Antispam Bee ne fonctionne que pour les commentaires, mais il s\u2019agit d\u2019un terrain de jeu que les spammers privil\u00e9gient.<br \/>\n<img decoding=\"async\" class=\"aligncenter size-full wp-image-27283\" src=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/Antispambee-compressor.jpg\" alt=\"Antispam Bee\" width=\"700\" height=\"467\" srcset=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/Antispambee-compressor.jpg 700w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/Antispambee-compressor-300x200.jpg 300w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/Antispambee-compressor-370x247.jpg 370w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/Antispambee-compressor-270x180.jpg 270w, https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/Antispambee-compressor-570x380.jpg 570w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<h2>D\u00e9tection d&#8217;empreintes digitales \/ reconnaissance faciale<\/h2>\n<p>Ok, ce n\u2019est peut-\u00eatre pas pour demain. Un grand nombre d&#8217;appareils, y compris les ordinateurs portables, sont dot\u00e9s d&#8217;un lecteur d\u2019empreintes digitales, mais il y a des tonnes d&#8217;ordinateurs de bureau et d&#8217;ordinateurs portables obsol\u00e8tes qui ne sont pas encore \u00e9quip\u00e9s. Pour tout dire je ne sais m\u00eame pas s&#8217;il est possible de l&#8217;ex\u00e9cuter sur un site web. Mais il s\u2019agit ind\u00e9niablement d\u2019une solution d\u2019avenir\u00a0!<\/p>\n<p>Pour mettre en place ces solutions sur votre site web, vous pouvez <a href=\"https:\/\/www.codeur.com\/fonctionnement-codeur\">faire appel \u00e0 un d\u00e9veloppeur freelance<\/a> sur Codeur.com.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le Web se compose de milliards de sites Web. Et aux yeux des spammeurs, un site web est consid\u00e9r\u00e9 comme une opportunit\u00e9 de promotion gratuite d\u2019un produit. Dans la plupart des cas, les pourriels affecteront les sites Web qui n&#8217;ont pas \u00e9t\u00e9 correctement s\u00e9curis\u00e9s au pr\u00e9alable. Et il se trouve qu&#8217;il y a beaucoup de [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":27284,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[14],"tags":[79],"class_list":["post-27274","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-developpement","tag-ressources"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>6 alternatives au CAPTCHA<\/title>\n<meta name=\"description\" content=\"Le Web se compose de milliards de sites Web. Et aux yeux des spammeurs, un site web est consid\u00e9r\u00e9 comme une opportunit\u00e9 de promotion gratuite d\u2019un\" \/>\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.codeur.com\/blog\/alternatives-captcha\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"6 alternatives au CAPTCHA\" \/>\n<meta property=\"og:description\" content=\"Le Web se compose de milliards de sites Web. Et aux yeux des spammeurs, un site web est consid\u00e9r\u00e9 comme une opportunit\u00e9 de promotion gratuite d\u2019un\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/\" \/>\n<meta property=\"og:site_name\" content=\"Codeur.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/fr-fr.facebook.com\/codeurfreelance\/\" \/>\n<meta property=\"article:published_time\" content=\"2019-09-27T08:50:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-28T09:52:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/recaptcha-alternative.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"618\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Thomas Lazzaroni\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@totolazza\" \/>\n<meta name=\"twitter:site\" content=\"@codeur\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Thomas Lazzaroni\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/\"},\"author\":{\"name\":\"Thomas Lazzaroni\",\"@id\":\"https:\/\/www.codeur.com\/blog\/#\/schema\/person\/cc3b0a678aeffcae19ecc599eaf679e5\"},\"headline\":\"6 alternatives au CAPTCHA\",\"datePublished\":\"2019-09-27T08:50:35+00:00\",\"dateModified\":\"2025-08-28T09:52:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/\"},\"wordCount\":924,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\/\/www.codeur.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/recaptcha-alternative.jpg\",\"keywords\":[\"Ressources\"],\"articleSection\":[\"D\u00e9veloppement\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/\",\"url\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/\",\"name\":\"6 alternatives au CAPTCHA\",\"isPartOf\":{\"@id\":\"https:\/\/www.codeur.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.codeur.com\/blog\/alternatives-captcha\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.codeur.com\/blog\/wp-content\/uploads\/2019\/09\/recaptcha-alternative.jpg\",\"datePublished\":\"2019-09-27T08:50:35+00:00\",\"dateModified\":\"2025-08-28T09:52:12+00:00\",\"description\":\"Le Web se compose de milliards de sites Web. 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