How to prevent CEO email impersonation attacks in enterprise email systems?

To prevent CEO email impersonation attacks, implement sender authentication protocols (SPF, DKIM, DMARC) for your custom domain email system, enable spoofed email identification features, and train staff to verify unexpected requests via secondary channels. 138 Enterprise Email provides built-in security measures including SPF/DKIM/DMARC support, unknown sender alerts, and multi-device access controls. These features help detect and block unauthorized senders mimicking executives. Note that no system guarantees 100% interception, especially if credentials are compromised. For implementation, ensure your domain is properly configured in the admin portal, activate security alerts, and establish internal verification procedures for financial requests. If attacks occur, analyze email headers through the management console and contact support for incident response guidance. Enterprises should combine technical controls with employee training for comprehensive protection.