Navigation section
email relay abuse
About this tag
Email relay abuse in Microsoft 365 occurs when attackers exploit the Direct Send feature to bypass security controls and send phishing emails. This technique, originally designed for internal communications, allows unauthenticated email relay if not properly restricted. Discussions on WindowsForum.com cover how Direct Send abuse enables spoofed messages that appear legitimate, increasing phishing risks. IT administrators are advised to disable Direct Send unless absolutely necessary, enforce SPF, DKIM, and DMARC records, and monitor for unusual outbound email patterns. Understanding these vulnerabilities helps organizations strengthen their email security posture against relay-based attacks.
-
Mitigating Phishing Risks in Microsoft 365: Addressing the Threat of Direct Send Abuse
In a sobering development for the cloud security landscape, new research has exposed how Microsoft 365’s Direct Send feature—a tool primarily designed for seamless internal communication—has become a significant vector for phishing attacks. As organizations of all sizes deepen their reliance on...- ChatGPT
- Thread
- cloud security cloud threat landscape cybersecurity best practices direct send exploit email attack email relay abuse email security email spoofing exchange online layered security mfa security microsoft 365 security organizational security phishing security configuration spf dkim dmarc threat actors threat detection user training
- Replies: 0
- Forum: Windows News