This report provides an in-depth analysis of various wireless technologies. It begins by exploring the security measures implemented in WiMax networks, focusing on encryption standards such as 3DES, AES, and PKMv2. The report then delves into Wireless Personal Area Networks (WPANs), examining technologies like Zigbee and Bluetooth, along with their respective security challenges, including Bluesnarfing and Bluebugging. The report also investigates energy harvesting in wireless sensor networks (EHWSN), detailing different energy sources and harvesting systems. The report includes an overview of the different slides. Overall, this report aims to provide a comprehensive understanding of the current state and security concerns of wireless technologies.