The Hacker News AI Security ยท June 15, 2026

One-Click Microsoft 365 Copilot Flaw Could Have Let Attackers Steal Emails, Files, and MFA Codes

Why it matters

Disclosure of a Microsoft 365 Copilot flaw that could expose enterprise data and auth material. Relevant to indirect prompt injection, identity, and tool-permission boundaries.

My takeaway: One-Click Microsoft 365 Copilot Flaw Could Have Let Attackers Steal Emails, Files, and MFA Codes is a threat-intelligence signal. The practical read is to connect the incident back to AI-adjacent software, developer tooling, and automation paths that need ordinary security controls.