What is need of web security? Define the basic security concepts and session tracking mechanisms.

Web security is essential in today's digital landscape due to the increasing dependence on the internet for various activities such as communication, commerce, and information retrieval. As more transactions and interactions occur online, the need to protect sensitive data and ensure the integrity and availability of web resources becomes paramount. Web security encompasses a range of measures and technologies aimed at safeguarding web applications, websites, and the data transmitted over the internet from unauthorized access, misuse, and malicious attacks.

### Need for Web Security:

1. Protection of Sensitive Data: Web applications often handle sensitive user information such as personal details, financial data, and login credentials. Securing this data is crucial to prevent unauthorized access and identity theft.

2. Prevention of Data Breaches: Data breaches can have severe consequences, including financial losses, damage to reputation, and legal implications. Web security measures help prevent unauthorized access to databases and sensitive information.

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