An assessment on whether North Korea is behind the WannaCry ransomware attacks leads the latest edition of the ISMG Security Report.

In the Security Report (click on player beneath image to listen), you'll also hear the co-author of NIST's revised trustworthy email guidance, Scott Rose, explain changes found in the updated document.

The ISMG Security Report appears on this and other ISMG websites on Tuesdays and Fridays. Check out our Dec. 15 and Dec. 19 editions, which respectively analyze a report on a malware attack on an industrial safety system that experts contend could threaten public safety and cyber's role in the new National Security Strategy.

The next ISMG Security Report will be posted on Tuesday, Dec. 26.

Theme music for the ISMG Security Report is by Ithaca Audio under a Creative Commons license.