This report provides a comprehensive overview of information security, covering key aspects such as antiviruses, hash algorithms, key management, and load balancing algorithms. The report begins by discussing various antivirus software, their features, and comparisons, including Windows Defender, Bid-defender, Smadav, and Norton antivirus. It then delves into hash algorithms, explaining Message Digest, Secure Hash Algorithm (SHA), Whirlpool, and RIPEMD, along with a comparison of their properties. Furthermore, the report explores the key management lifecycle, detailing the processes of creation, deployment, and monitoring. Finally, it examines load balancing algorithms, including Round Robin, Weighted Round Robin, Source IP Hash, URL Hash, Least Connections, and Server algorithms, providing their advantages and disadvantages. The report aims to provide a detailed understanding of these critical elements in information security.