input validation and sanitization

Input validation refers to the process of verifying and checking user input to ensure that it meets certain predefined criteria or restrictions. It is done to ensure that the data entered by users is accurate, complete, and reliable. Input sanitization, on the other hand, involves cleaning and removing any potentially harmful or malicious elements from the user input to prevent any security vulnerabilities or code injection attacks. It helps maintain the integrity and security of the system by eliminating any potentially harmful input.

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