{"id":227266,"date":"2025-12-17T01:29:48","date_gmt":"2025-12-17T07:29:48","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/12\/ghostposter-attacks-hide-malicious-javascript-in-firefox-addon-logos"},"modified":"2025-12-17T01:29:48","modified_gmt":"2025-12-17T07:29:48","slug":"ghostposter-attacks-hide-malicious-javascript-in-firefox-addon-logos","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/12\/ghostposter-attacks-hide-malicious-javascript-in-firefox-addon-logos","title":{"rendered":"GhostPoster attacks hide malicious JavaScript in Firefox addon logos"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/logo.ghostposter-attacks-hide-malicious-javascript-in-firefox-addon-logos.jpg\"><\/a><\/p>\n<p>A new campaign dubbed \u2018GhostPoster\u2019 is hiding JavaScript code in the image logo of malicious Firefox extensions with more than 50,000 downloads, to monitor browser activity and plant a backdoor.<\/p>\n<p>The malicious code grants operators persistent high-privilege access to the browser, enabling them to hijack affiliate links, inject tracking code, and commit click and ad fraud.<\/p>\n<p>The hidden script is acting as a loader that fetches the main payload from a remote server. To make the process more difficult to detect, the payload is intentionally retrieved only once in ten attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new campaign dubbed \u2018GhostPoster\u2019 is hiding JavaScript code in the image logo of malicious Firefox extensions with more than 50,000 downloads, to monitor browser activity and plant a backdoor. The malicious code grants operators persistent high-privilege access to the browser, enabling them to hijack affiliate links, inject tracking code, and commit click and ad [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-227266","post","type-post","status-publish","format-standard","hentry","category-futurism"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/227266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=227266"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/227266\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=227266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=227266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=227266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}