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Microsoft’s Clippy-like Mico character is no longer the face of Copilot
Microsoft has removed the Mico avatar from Copilot’s voice interface and relocated it to the Learn Live platform, citing a need for richer contextual interaction — marking another iteration in Microsoft’s history of retiring AI personas.
Aug 14, 2026
A security researcher built a self-spreading worm that hides inside Word docs and hijacks Microsoft Copilot
A security researcher demonstrated a self-replicating prompt injection worm targeting Microsoft Copilot for Word, embedding malicious instructions in Word documents that propagate silently upon reuse; Microsoft acknowledged the vulnerability but did not resolve it within 144 days despite two remediation attempts.
Aug 1, 2026
New Microsoft Copilot Security Flaws Show How AI Can Leak Customer Secrets - The Information
A security researcher disclosed vulnerabilities in Microsoft Copilot that could expose customer data to unauthorized parties, highlighting systemic risks in AI assistant architectures.
Jul 31, 2026
Microsoft Copilot for Word Can Copy Hidden Prompts Into New Documents
A security researcher demonstrated that Microsoft 365 Copilot for Word can unintentionally propagate hidden, executable prompt instructions from source documents into newly generated documents — enabling silent, recursive execution of arbitrary instructions across document generations.
Jul 30, 2026
Billtrust launches AR Intelligence connection for Claude and Microsoft Copilot
Billtrust has integrated its accounts receivable (AR) data platform with Microsoft Copilot and Anthropic's Claude, enabling finance teams to query live invoice-to-cash data using natural language within those AI assistants.
Jul 24, 2026
OpenAI says GPT 5.6 is the ‘preferred model’ for Microsoft Copilot 365 amid breakup chatter
OpenAI announced that its GPT-5.6 model family remains the preferred AI backend for Microsoft Copilot 365, countering speculation about a strategic divergence between the two companies.
Jul 10, 2026