To embed, copy and paste the code into your website or blog: On December 21, 2020, the National Industrial Security Program Operating Manual (“NISPOM”) was published as a final rule in the Federal Register. A revision to the NISPOM has been expected for a number of years, and is effective today, February 24, 2021. A number of changes were made to this iteration of the NISPOM, but most of the changes merely formalize current U.S. government policies that were not previously described in the manual. In any case, companies who currently possess, are in process for, or are seeking a facility security clearance should review how the NISPOM changes apply to their specific circumstances and goals going forward.