Information security is of vital importance in any industry. Due to the emergence of smart devices, the need has only soared. Especially in wireless devices with low computation power, such as Low-Power Wide Area Network (LPWAN) it is increasingly difficult to design and provide secure passage to the data. Unlike its counterpart in the IoT realm, 6LoWPAN, LPWAN serves a much wider area. This renders it more challenging in terms of node placements for optimal coverage, link establishment and quality support. Adding to this, intrusion detection for LPWANs is not heavily researched upon. In face of all these issues surrounding LPWANs, we try to put forward a review of the intrusion detection and prevention approaches that are currently in place and are supposed to be state-of-the-art techniques. This chapter primarily focuses on the security considerations and mechanisms that are suitable for leading LPWAN technologies such as Sigfox, LoRaWAN, Narrow-Band IoT (NB-IoT) etc. After our thorough literature search, we identified several IDS and IPS schemes proposed for Sigfox, LoRaWAN, and NB-IoT. This is presented in a tabular form by comparing each scheme according to their unique features such as advantages and limitations. We also briefly address the research gaps associated before and after the installation of IDS or IPS on an LPWAN network, starting from its deployment and conclude the chapter with an emphasis on future work in this area.