A first communication device for use in a wireless communication system to communicate with a second communication device comprises circuitry configured to perform beamforming training with the second communication device to train a plurality of antenna beam combinations of antenna beams used by the first and second communication devices for transmitting and/or receiving signals, select one or more of the trained antenna beam combinations according to a security criterion that is directed to reducing the probability that a third communication device can eavesdrop on the communication between the first communication device and the second communication device, and communicate with the second communication device using the selected one or more antenna beam combinations.