**EXECUTIVE SUMMARY FBI CYBER ALERT – ADVANCED THREAT: OUTLOOK / ONEDRIVE COMPROMISE**
**Viral News Snippet:**
**BREAKING: FBI Warns – "Living off the Land" Attack Now Targeting Your Microsoft Ecosystem.**
The FBI has issued an urgent, industry-wide alert: sophisticated state-backed actors are bypassing traditional malware detection and weaponizing legitimate Microsoft Outlook and OneDrive tools. Instead of breaking in, they *log in*—using stolen session cookies and API tokens to move laterally across corporate accounts. **The attack is invisible to standard antivirus.** Once inside, attackers read emails, exfiltrate files, and plant malicious links inside trusted OneDrive documents. **Bottom line:** Your CEO’s private inbox and your entire file repository may already be compromised, with zero signs of a breach. **Immediate action required**: Audit all OAuth consent grants, enforce token expiration, and assume account takeover until verified clean.