RT Journal Article T1 A Product Channel Attack to Wireless Physical Layer Security A1 Anaya López, Gonzalo Javier A1 Gómez-Paredes, Gerardo A1 López-Martínez, Francisco Javier K1 Sistemas de comunicación inalámbricos - Medidas de seguridad K1 Telecomunicaciones AB We propose a novel attack that compromises the physical layer security in wireless systems with eavesdropper's channel state information at the transmitter side. This technique is based on the transmission of a slowly-varying random symbol by the eavesdropper during its uplink transmission, so that the equivalent fading channel observed at the base station (BS) has a larger variance. Then, the BS designs the secure downlink transmission under the assumption that the eavesdropper's channel experiences a larger fading severity than in reality. We show that this approach can lead the BS to transmit to Bob at a rate larger than the secrecy capacity, thus compromising the system secure operation. Our analytical results, corroborated by simulations, show that the use of multiple antennas at the BS may partially alleviate but not immunize against these type of attacks. PB IEEE YR 2021 FD 2021-01-11 LK https://hdl.handle.net/10630/40874 UL https://hdl.handle.net/10630/40874 LA eng NO G. J. Anaya-Lopez, G. Gomez and F. J. Lopez-Martinez, "A Product Channel Attack to Wireless Physical Layer Security," in IEEE Wireless Communications Letters, vol. 10, no. 5, pp. 943-947, May 2021, doi: 10.1109/LWC.2021.3050957 NO https://openpolicyfinder.jisc.ac.uk/id/publication/23590 NO Unión Europea NO Junta de Andalucía NO Universidad de Málaga NO Gobierno de España DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 13 abr 2026