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The evolution of technology has made our lives more convenient, allowing us to communicate with anyone across the globe, access data whenever we need it, and connect our devices to the internet. Since a large amount of our personal data is stored on computers or transmitted wirelessly, encryption has become essential for ensuring the safety and privacy of this data, limiting access to only authorized personnel. Encryption methods have become increasingly sophisticated over time, with complex computer algorithms able to process data within seconds. The purpose of this paper is to provide an overview of encryption, including its early forms and history, modern encryption technologies such as WEP, WPA, and WPA2, and their weaknesses, improvements, and applications in information technology. In conclusion, this paper highlights the significance of robust wireless security protocols and encryption in …