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Cyera Research

Agents in the Cloud: A Safer Setup When Everyone's a Developer PostGREShell: The database powering much of the internet had an open door for 12 years Drive-By Agent Hijacking: One Website Visit, Persistent Model Poisoning Sandcastles, Not Sandboxes: How One Architectural Flaw Exposed Seven Products Breaking Local AI Runtimes: 10 vulnerabilities in the Engine Behind Your Open-Source Models The Hidden Attack Surface of Agentic AI: Securing AI Agent Integration Platforms The Helpful Agent Problem: When AI Good Intentions Become Security Incidents Agent-Inflicted Damage: Inside the Real-World Failures of Enterprise AI Systems Proto6: The Schema Was Not Supposed to Run Four New OpenClaw Vulnerabilities: When AI Agents Become the Attacker's Execution Layer The End of Volume-Based Severity: Rebuilding Risk Assessment with AI That File in Teams? Your Entire Organization Might Be Able to Access It The Long-Lived Risk of Malicious OAuth Applications: A Practical Threat Hunting Guide for M365 Escaping the Guest: How Custom LLM Workflows Uncovered Critical VMSVGA Vulnerabilities From Prompt to Exploit: Cyera Research Discloses Command & Prompt Injection Vulnerabilities in Gemini CLI The New Data Breach Playbook: How ShinyHunters Exploit Access The Data Taxonomy Illusion: Why Security Teams Are Solving the Wrong Problem Bleeding Llama: Critical Unauthenticated Memory Leak in Ollama SplitSSHell - When a Comma Becomes Root How a Single Character Broke OpenSSH Certificate Authentication Compromise Once, Breach Everywhere. ‍The Age of Mega-Supply Chain Attacks Top 10 Notable Data Security Risks in AWS Environments One Megabyte to Root: How a Size Check Broke Docker’s Last Line of Defense LangDrained: 3 Paths to Your Data Through LangChain, the World’s Most Popular AI Framework Ni8mare  -  Unauthenticated Remote Code Execution in n8n (CVE-2026-21858) 96% of Enterprise Permissions Go Unused. AI Agents Won't Leave Them That Way. When Language Becomes the Attack Vector: The Lethal Trifecta of AI Agents DESTRUCTURED - Critical Vulnerability in Unstructured.io (CVE-2025–64712) Assessing the Top Data Security Risks in AWS Environments Detection Is Fast. Understanding Is Not. Why File-Access Incidents Stall - and How Impact Clarity Changes the Outcome The OpenClaw Security Saga: How AI Adoption Outpaced Security Boundaries
Top 10 Data Security Risks on Microsoft 365 Environments
Cyera · 2026-04-14 · via Cyera Research

Research Labs

September 29, 2025

With over 300 million users, Microsoft 365 is essential to modern collaboration, but it's also a growing surface for data exposure. Based on Cyera's 2025 analysis across enterprise environments, these are the top 10 notable Microsoft 365 risks that every CISO and data leader should actively monitor and remediate.

Secure
the unknown