Information security practitioners pride themselves on precision and attention to detail. We cringe at slick catchphrases. Yet there’s something that continues to elude many: what OPSEC really means, and where it applies. It’s time to change that. Delve into the history and evolution of Operations Security, gain familiarity with OPSEC assessment, analysis, and measures, and learn how this process may truly apply to your security practice. The role of OPSEC in the new-for-2022 MITRE Engage framework will also be explored.