{"id":241876,"date":"2026-07-30T20:25:57","date_gmt":"2026-07-31T01:25:57","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/07\/microsoft-copilot-for-word-can-copy-hidden-prompts-into-new-documents"},"modified":"2026-07-30T20:25:57","modified_gmt":"2026-07-31T01:25:57","slug":"microsoft-copilot-for-word-can-copy-hidden-prompts-into-new-documents","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/07\/microsoft-copilot-for-word-can-copy-hidden-prompts-into-new-documents","title":{"rendered":"Microsoft Copilot for Word Can Copy Hidden Prompts Into New Documents"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/microsoft-copilot-for-word-can-copy-hidden-prompts-into-new-documents.jpg\"><\/a><\/p>\n<p>Hidden instructions in a Word document can make Microsoft 365 Copilot rewrite figures in a report, then copy the same instructions into the finished file. H\u00e5kon M\u00e5l\u00f8y <a href=\"https:\/\/enklypesalt.com\/posts\/context-collapse-part3-ai-worming-through-word\/\" target=\"_blank\">disclosed the technique<\/a> on July 28,144 days after reporting it to Microsoft.<\/p>\n<p>In his proof of concept, the internally generated file triggered the same behavior when it was used in a second Copilot drafting session.<\/p>\n<p>M\u00e5l\u00f8y\u2019s timeline says Microsoft confirmed the reported behavior on March 31 and deployed two mitigations. The first blocked the original prompt wording; the second upgraded the underlying model to GPT-5.5.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hidden instructions in a Word document can make Microsoft 365 Copilot rewrite figures in a report, then copy the same instructions into the finished file. H\u00e5kon M\u00e5l\u00f8y disclosed the technique on July 28,144 days after reporting it to Microsoft. In his proof of concept, the internally generated file triggered the same behavior when it was [\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-241876","post","type-post","status-publish","format-standard","hentry","category-futurism"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241876","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=241876"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241876\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=241876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=241876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=241876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}