In one embodiment, a device in a network receives sensor data from one or more nodes in the network. The device selects a processing mode from among a plurality of processing modes based on a plurality of attributes of the sensor data. The plurality of processing modes comprises a fast data path mode and a slow data path mode. The device encrypts the sensor data using a first encryption mechanism that controls access to the plurality of attributes of the sensor data. The device sends the encrypted sensor data to a cloud-based intermediary based on the selected processing mode for sharing with one or more other devices in one or more other networks.