Microsoft 365 Copilot — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
33
occurrences
First Seen
November 20, 2025
Last Seen
September 7, 2026

Related Threat Clusters

Recent Intelligence Reports

  • Reprompt — www.varonis.com · September 7, 2026
  • Prompt injection protection: Detecting and blocking malicious AI instructions — Acronis · September 7, 2026
  • New attack bypasses AI guardrails by encrypting malicious prompts — Feeds.Feedburner · August 21, 2026
  • Microsoft 365 Copilot Word worm survives model updates — Feeds.4Sysops · July 30, 2026
  • Proven LLM Security Best Practices That Stand Between Your AI and an Attack — Bignewsnetwork · July 30, 2026
  • July 2026 Monthly Patch — Csa.Sg · July 15, 2026
  • July 2026 Monthly Patch — Csa.Sg · July 15, 2026
  • Prompt injection is exploiting enterprise AI's biggest design flaws by targeting agents, RAG ... — Venturebeat · June 28, 2026

CVSS v3.1 Breakdown