Abstract: A method to disguise existence of a communication channel and/or type of communication method thereby to provide a discrete communication channel and/or protect communicated contents from malevolent manipulations, the method comprising: at a transmitter end, transforming a signal to be transmitted into a noise-like signal without changing the original communication parameters and protocol, and transmitting the noise-like signal; and/or at a receiver end, receiving a noise-like signal and de-spreading the noise-like signal thereby to reconstruct the signal to be transmitted.