2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89547We consider the problem of detecting whether an attacker measures the amount of traffic sent over a communication channel-possibly without extracting information about the transmitted data. A basic approach for designing a quantum protocol for detecting a perpetual traffic analysis of this kind is described.8 pages, to appear in Quant. Inform. & Comp. (2001)Quantum Physicstext