The final season of “Stranger Things” is upon us, and 1980s nostalgia is at an all-time high. The clunky control panels at Hawkins Lab help set the stage for the show. The unfortunate reality is that similar legacy systems still exist in operational technology (OT) environments today. Just as Hawkins Lab spawned a monstrous compendium from the “Upside Down,” a variety of threats have burst forth from vulnerable devices. Nation-state threats, such as Volt Typhoon, have established persistent