Over the past year, the Microsoft Threat Intelligence Center (MSTIC) has observed a gradual evolution of the tools, techniques, and procedures employed by malicious network operators based in Iran. At CyberWarCon 2021, MSTIC analysts presented their analysis of these trends in Iranian nation state actor activity during a session titled “The Iranian evolution: Observed changes in Iranian malicious network operations”. This blog is intended to summarize the content of that research and the topics covered in their presentation and demonstrate MSTIC’s ongoing efforts to track these actors and protect customers from the related threats.