On September 20, the US Department of Commerce (DOC) published a final rule revising the Commerce Control List (CCL) and other sections of the Export Administration Regulations (EAR). This rule implements revisions decided at the December 2015 Wassenaar Arrangement plenary meeting, but also includes additional updates to the EAR. The final rule revises 58 Export Control Classification Numbers (ECCNs), adds two ECCNs, and revises license exception eligibility for seven ECCNs. The changes center on ECCNs controlled for national security reasons, but the most significant changes are to DOC’s encryption rules, which last saw major changes in June 2010. The DOC changes took effect at the September 20 publication of this final rule. For more information, please see our advisory.