#OPSEC365 109/365 Smart meters report your electricity usage in near real time. Usage patterns reveal when you are home, when you sleep, and how many people live with you. Utilities share this data for demand planning. Researchers have reconstructed household activities from smart meter data alone. At fifteen-minute intervals, the meter mainly exposes occupancy and sleep schedule. Appliance-level identification needs sub-second sampling. #OPSEC365