Editor's Note: This post originally appeared on the Microsoft Security blog and has been republished here.  You already know that email is the number one attack vector for cybercriminals. But what you might not know is that without a standard email security protocol called Domain Message Authentication, Reporting, and Conformance (DMARC), your organization is open to the...

This post originally appeared on the Armadillo Blog and has been lightly edited for clarity.   Most organisations have been successful in blocking malicious emails targeted at their employees, at least to some extent. Various on-premise and cloud providers exist to take care of anti-spam, anti-virus, reputation scores, and advanced features such as sandboxing of executables. As...