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.lightemupsequences.com/flash-pick-Tiki-Luau-Shaped-Thank-You-Cards-Tropical-Hawaiian-Summer-Party-Thank-You-Note-Cards-with-Envelopes-Set-of-12-top-super