This paper studies the secure transmission in the dual-hop cognitive wiretap networks. where the secondary transmitter (Alice) aims to transmit confidential information to the secondary receiver (Bob) in the face of a multi-antenna relay (Relay). while the malicious eavesdropper (Eve) is used to eavesdrop the confidential information from Alice and Relay. To improve security. https://ashleyshomestores.shop/product-category/6-piece-power-reclining-sectional-2/