Wire · technology
Microsoft finally patches critical one-click Copilot vulnerability, almost eight months after learning of it
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Fusion42 · 19 August 2026 · Fusion42 review
Microsoft patched a critical vulnerability in its personal Copilot AI assistant almost eight months after discovery, which enabled automatic execution of malicious prompts leading to data exfiltration and persistent memory poisoning. The flaw affected personal versions but posed risks for enterprises due to mixed environment usage and upcoming Copilot Fusion unification.
This Wire brief sits within Fusion42's coverage of AI & ML.
◆ ◆ The Wire takeaway
Microsoft's delayed patch for Copilot exposes founders relying on AI integrations to immediate risk from unseen exploit chains. You must reassess AI tools for persistent security risks beyond official announcements or face breaches from overlooked weaknesses in personal accounts.
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1 source · 19 Aug 2026
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