Microsoft Security Blog

Copilot Studio agents are increasingly powerful. With that power comes risk: small misconfigurations, over‑broad sharing, unauthenticated access, and weak orchestration controls can create real exposure. This article consolidates the ten most common risks we observe and maps each to practical detections and mitigations using Microsoft Defender capabilities. The post Copilot Studio agent security: Top 10 risks you can detect and prevent appeared first on Microsoft Security Blog.

Microsoft Security returns to RSAC Conference to show how Frontier Firms—organizations that are human-led and agent-operated—can stay ahead. The post Your complete guide to Microsoft experiences at RSAC™ 2026 Conference appeared first on Microsoft Security Blog.

New guide details how a unified, AI ready SIEM platform empowers security leaders to operate at the speed of AI, strengthen resilience, accelerate detection and response, and more. The post The strategic SIEM buyer’s guide: Choosing an AI-ready platform for the agentic era appeared first on Microsoft Security Blog.

Read Microsoft's new Cyber Pulse report for straightforward, practical insights and guidance on new cybersecurity risks. The post 80% of Fortune 500 use active AI Agents: Observability, governance, and security shape the new frontier appeared first on Microsoft Security Blog.

That helpful “Summarize with AI” button? It might be secretly manipulating what your AI recommends.  Microsoft security researchers have discovered a growing trend of AI memory poisoning attacks used for promotional purposes, a technique we call AI Recommendation Poisoning. The post Manipulating AI memory for profit: The rise of AI Recommendation Poisoning appeared first on Microsoft Security Blog.