In this chapter, will we cover concepts such as evil twins, ARP spoofing, and tools used for evil twin detection. This chapter will go into greater detail about rogue access points and the purpose of address spoofing. We will discuss how to setup evil twin access points and explain how they are used. This chapter will provide various ways to detect and defend against evil twin attacks. We will also discuss different attack and defense scenarios involving MITM and rogue access points. The objectives of this chapter are to get the reader familiar with the details of evil twins, address spoofing, MITM scenarios, and defense methods. After reading this chapter, the user will understand how to detect evil twins running on the network.