In cognitive radio networks. an adversary transmits signals with characteristics that emulate those of primary users to prevent secondary users from transmitting. Such an attack is called a primary user emulation (PUE) attack. In this paper. https://www.diegojavierfares.com/flash-offer-A-D-EJ-123-Newton-Compact-Balance-Scale-120-x-0-001-g-hot-grab/