Mais de 110 mil sites que utilizam a biblioteca JavaScript de c\u00f3digo aberto Polyfill para garantir compatibilidade com vers\u00f5es mais antigas de navegadores foram v\u00edtimas de altera\u00e7\u00f5es maliciosas introduzidas no c\u00f3digo da biblioteca pelo novo propriet\u00e1rio do projeto. Um c\u00f3digo malicioso foi integrado \u00e0 biblioteca, carregada em sites atrav\u00e9s do dom\u00ednio cdn.polyfill.io, redirecionando usu\u00e1rios para sites fraudulentos (como googie-anaiytics.com), casas de apostas e cassinos online.<\/p>\n
O projeto Polyfill foi vendido em fevereiro para a empresa Funnull da China, que obteve acesso \u00e0 conta no GitHub e ao site polyfill.io. Alguns meses ap\u00f3s a aquisi\u00e7\u00e3o, o novo propriet\u00e1rio organizou um esquema de monetiza\u00e7\u00e3o fraudulenta que redirecionava parte dos usu\u00e1rios para sites duvidosos. O redirecionamento ocorria com certa probabilidade, em hor\u00e1rios espec\u00edficos e sob condi\u00e7\u00f5es, como abrir o site a partir de um celular e a aus\u00eancia de cookies que sinalizassem que a p\u00e1gina foi aberta por um administrador do site. Quando sistemas de web analytics eram detectados no site, o redirecionamento era adiado por alguns segundos para n\u00e3o aparecer nas estat\u00edsticas desses sistemas.<\/p>\n
\u00c9 not\u00e1vel que o novo propriet\u00e1rio apaga do GitHub quaisquer reclama\u00e7\u00f5es indicando atividades suspeitas ou mudan\u00e7a de propriet\u00e1rio, aparentemente esperando que os usu\u00e1rios considerem a transi\u00e7\u00e3o autom\u00e1tica uma iniciativa dos autores dos sites originalmente abertos.<\/p>\n
Os usu\u00e1rios do Polyfill s\u00e3o aconselhados a remover o c\u00f3digo para carregar a biblioteca atrav\u00e9s do host cdn.polyfill.io o mais r\u00e1pido poss\u00edvel. Observa-se que, nas condi\u00e7\u00f5es atuais, a necessidade do Polyfill n\u00e3o existe mais, j\u00e1 que todos os principais navegadores suportam adequadamente a Web API (o Polyfill avalia dinamicamente o navegador atual pelo cabe\u00e7alho User Agent e gera fun\u00e7\u00f5es com implementa\u00e7\u00f5es de m\u00e9todos, propriedades e APIs ausentes para navegadores obsoletos). <\/p>\n
Aqueles que ainda precisam do Polyfill podem utilizar vers\u00f5es da biblioteca disponibilizadas pelas empresas Fastly e Cloudflare, ou podem usar uma servidor<\/a> c\u00f3pia local baseada no c\u00f3digo de um reposit\u00f3rio com um fork criado pelo autor original do projeto. Espelhos foram criados em fevereiro devido a d\u00favidas sobre a confiabilidade do novo propriet\u00e1rio de dom\u00ednio<\/a> polyfill.io. \u0411\u043e\u043b\u0435\u0435 110 \u0442\u044b\u0441\u044f\u0447 \u0441\u0430\u0439\u0442\u043e\u0432, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e JavaScript-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 Polyfill \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u043e \u0441\u0442\u0430\u0440\u044b\u043c\u0438 \u0432\u0435\u0440\u0441\u0438\u044f\u043c\u0438 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u043e\u0432, \u0441\u0442\u0430\u043b\u0438 \u0436\u0435\u0440\u0442\u0432\u043e\u0439 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u044b\u0445 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u0432\u043d\u0435\u0441\u0451\u043d\u043d\u044b\u0445 \u0432 \u043a\u043e\u0434 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u043d\u043e\u0432\u044b\u043c \u0432\u043b\u0430\u0434\u0435\u043b\u044c\u0446\u0435\u043c \u043f\u0440\u043e\u0435\u043a\u0442\u0430. \u0412 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443, \u0437\u0430\u0433\u0440\u0443\u0436\u0430\u0435\u043c\u0443\u044e \u043d\u0430 \u0441\u0430\u0439\u0442\u044b \u0447\u0435\u0440\u0435\u0437 \u0434\u043e\u043c\u0435\u043d cdn.polyfill.io, \u0431\u044b\u043b \u0432\u0441\u0442\u0440\u043e\u0435\u043d \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u044b\u0439 \u043a\u043e\u0434, \u043f\u0435\u0440\u0435\u043d\u0430\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u043d\u0430 \u043c\u043e\u0448\u0435\u043d\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0441\u0430\u0439\u0442\u044b (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, googie-anaiytics.com), \u0431\u0443\u043a\u043c\u0435\u043a\u0435\u0440\u0441\u043a\u0438\u0435 \u043a\u043e\u043d\u0442\u043e\u0440\u044b \u0438 online-\u043a\u0430\u0437\u0438\u043d\u043e. \u041f\u0440\u043e\u0435\u043a\u0442 Polyfill \u0432 \u0444\u0435\u0432\u0440\u0430\u043b\u0435 \u0431\u044b\u043b \u043f\u0440\u043e\u0434\u0430\u043d […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116774","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A mudan\u00e7a de propriet\u00e1rio da biblioteca Polyfill resultou na inser\u00e7\u00e3o de c\u00f3digo malicioso em 110 mil sites | ProHoster","description":"Mais de 110 mil sites que utilizam a biblioteca JavaScript aberta Polyfill para garantir compatibilidade com vers\u00f5es antigas de navegadores foram v\u00edtimas de altera\u00e7\u00f5es maliciosas feitas no c\u00f3digo da biblioteca por um novo respons\u00e1vel.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/smena-vladelcza-biblioteki-polyfill-privela-k-podstanovke-vredonosnogo-koda-na-110-tysyach-sajtov","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0421\u043c\u0435\u043d\u0430 \u0432\u043b\u0430\u0434\u0435\u043b\u044c\u0446\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 Polyfill \u043f\u0440\u0438\u0432\u0435\u043b\u0430 \u043a \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0435 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430 110 \u0442\u044b\u0441\u044f\u0447 \u0441\u0430\u0439\u0442\u043e\u0432 | ProHoster","og:description":"\u0411\u043e\u043b\u0435\u0435 110 \u0442\u044b\u0441\u044f\u0447 \u0441\u0430\u0439\u0442\u043e\u0432, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e JavaScript-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 Polyfill \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u043e \u0441\u0442\u0430\u0440\u044b\u043c\u0438 \u0432\u0435\u0440\u0441\u0438\u044f\u043c\u0438 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u043e\u0432, \u0441\u0442\u0430\u043b\u0438 \u0436\u0435\u0440\u0442\u0432\u043e\u0439 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u044b\u0445 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u0432\u043d\u0435\u0441\u0451\u043d\u043d\u044b\u0445 \u0432 \u043a\u043e\u0434 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u043d\u043e\u0432\u044b\u043c.","og:url":"https:\/\/prohoster.info\/pt\/blog\/news\/smena-vladelcza-biblioteki-polyfill-privela-k-podstanovke-vredonosnogo-koda-na-110-tysyach-sajtov","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2024-06-25T22:05:43+00:00","article:modified_time":"2024-06-25T22:05:43+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"116774","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-03-05 11:13:33","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-01-23 02:56:19","updated":"2026-03-05 11:13:33","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/116774","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/comments?post=116774"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/116774\/revisions"}],"predecessor-version":[{"id":163256,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/116774\/revisions\/163256"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/media?parent=116774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/categories?post=116774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/tags?post=116774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"