This research delves into the critical aspects of wireless network security, exploring the vulnerabilities and threats that pose risks to data integrity and user privacy. It examines various security breaches, including data modification, impersonation attacks, eavesdropping, and denial of service, highlighting the importance of robust security measures. The paper analyzes different levels of security countermeasures, encompassing administrative, physical, and technical approaches. It emphasizes the significance of data encryption, integrity, authentication, and active protection mechanisms in safeguarding wireless networks. The research aims to provide a comprehensive understanding of wireless network security challenges and effective preventive techniques, contributing to the development of secure and reliable wireless communication systems.