NATIONAL PRESTO INDUSTRIES INC

National Presto's outage on March 1, 2025, halted manufacturing, shipping, and receiving together, the predictable result when a company making both pressure cookers and munitions runs them across one shared back office. The intrusion reached National Defense Corporation, its ordnance subsidiary, through that common spine; how the door opened was never disclosed. InterLock claimed the hit and roughly 3 million stolen files, then met a company that declined to pay on the theory a defense maker's data was worthless to anyone.