{"id":10592,"date":"2026-02-12T07:03:34","date_gmt":"2026-02-12T07:03:34","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2026\/02\/12\/first-malicious-outlook-add-in-found-html\/"},"modified":"2026-02-12T07:03:34","modified_gmt":"2026-02-12T07:03:34","slug":"first-malicious-outlook-add-in-found-html","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2026\/02\/12\/first-malicious-outlook-add-in-found-html\/","title":{"rendered":"First Malicious Outlook Add-In Found Stealing 4,000+ Microsoft Credentials"},"content":{"rendered":"<p>    First Malicious Outlook Add-In Found Stealing 4,000+ Microsoft Credentials<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n    <!-- no image --><br \/>\n \t<BR><br \/>\n<BR><\/BR><\/p>\n<div>Cybersecurity researchers have discovered what they said is the first known malicious Microsoft Outlook add-in detected in the wild.<br \/>\nIn this unusual supply chain attack detailed by Koi Security, an unknown attacker claimed the domain associated with a now-abandoned legitimate add-in to serve a fake Microsoft login page, stealing over 4,000 credentials in the process. The activity has been<\/div>\n<p> \t<BR><br \/>\n <BR><\/BR><\/p>\n<p> \t<BR><br \/>\n<BR><\/BR><br \/>\n<a href=\"https:\/\/thehackernews.com\/2026\/02\/first-malicious-outlook-add-in-found.html\">Go to TheHackersNews<\/a><br \/>\n \t<BR><br \/>\n <BR><\/BR><\/p>\n","protected":false},"excerpt":{"rendered":"<p>First Malicious Outlook Add-In Found Stealing 4,000+ Microsoft Credentials Cybersecurity researchers have discovered what they said is the first known malicious Microsoft Outlook add-in detected in the wild. In this unusual supply chain attack detailed by Koi Security, an unknown attacker claimed the domain associated with a now-abandoned legitimate add-in to serve a fake Microsoft [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[76],"class_list":["post-10592","post","type-post","status-publish","format-standard","hentry","category-thehackersnews","tag-thehackersnews"],"_links":{"self":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/10592"}],"collection":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/comments?post=10592"}],"version-history":[{"count":0,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/10592\/revisions"}],"wp:attachment":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/media?parent=10592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/categories?post=10592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/tags?post=10592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}