Abstract: A method for storing data includes encrypting a first file (30) so as to generate a block (32) of encrypted data. The block of the encrypted data is inserted into a second file (34) containing data having a random distribution. The second file, including the block of the encrypted data, is stored in a storage medium (24).
Abstract: A method for securing data includes encrypting the data and storing a key (54) for deciphering the encrypted data in a volatile memory (56) coupled to a power source (62). In response to an event indicative of a vulnerability of the data to unauthorized exposure, the power source is disconnected from the volatile memory.
Abstract: Sensing apparatus includes a network camera, which is configured to capture images of a scene and to output a sequence of data packets containing digitized video data responsively to the images. A one-way link is coupled to the network camera so as to transmit the data packets from the network camera to a packet communication network.
Abstract: A method for monitoring a process includes receiving a signal from a sensor that is indicative of a physical attribute associated with the process and transmitting data indicative of the received signal over a one-way link. The transmitted data received from the one way link are used in monitoring the process.