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Microsoft patches Excel Copilot flaw exposing enterprise data

Microsoft has addressed a security vulnerability in its Copilot feature for Excel that could have exposed sensitive enterprise data. Researchers demonstrated a method where a single click could reveal two-factor authentication codes and other confidential information. The company has since implemented a patch to rectify this flaw. AI

IMPACT This patch addresses a security vulnerability in an AI-powered tool, enhancing user trust and data protection for enterprise users.

RANK_REASON This is a patch for a specific feature within a product, not a new product release or significant industry event.

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Microsoft patches Excel Copilot flaw exposing enterprise data

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  1. Mastodon — mastodon.social TIER_1 English(EN) · winbuzzer ·

    https:// winbuzzer.com/2026/06/16/micro soft-patches-copilot-searchleak-data-theft-flaw-xcxwbn/ Microsoft has patched a Copilot flaw after researchers showed a

    https:// winbuzzer.com/2026/06/16/micro soft-patches-copilot-searchleak-data-theft-flaw-xcxwbn/ Microsoft has patched a Copilot flaw after researchers showed a one-click chain that could expose two-factor codes and enterprise data via search. # AI # SearchLeak # Microsoft365Copil…