**BREAKING NEWS: FBI ISSUES URGENT CYBERSECURITY ALERT REGARDING MICROSOFT OUTLOOK AND ONEDRIVE**
**WASHINGTON, D.C. –** The Federal Bureau of Investigation (FBI) has issued a formal cybersecurity warning to both public and private sector entities regarding active threat campaigns targeting Microsoft Outlook and OneDrive.
**Who:** The alert was issued by the FBI’s Cyber Division in coordination with the Cybersecurity and Infrastructure Security Agency (CISA).
**What:** The advisory warns of sophisticated phishing and credential theft operations designed to compromise user accounts. The specific threat involves malicious actors using deceptive emails and compromised OneDrive file-sharing links that appear to originate from legitimate internal sources.
**Where:** The alert applies to all organizations and individual users within the United States operating on the Microsoft 365 platform.
**When:** The advisory was disseminated to nationwide field offices and critical infrastructure partners effective 0830 hours Eastern Time today, with immediate recommended action.
**Why:** According to the FBI, threat actors are exploiting vulnerabilities in the authentication process. By sending deceptive notifications prompting users to review shared documents or security alerts, attackers gain access to corporate and personal login credentials. Once access is obtained, threat actors exfiltrate sensitive data and expand access across enterprise networks.
**What’s Next:** The FBI strongly recommends all users implement multi-factor authentication on all accounts, verify any unsolicited file-sharing requests through a separate communication channel, and report any suspicious activity related to Outlook or OneDrive to the Internet Crime Complaint Center (IC3) immediately.