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CODING

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AI Prompt for

Input validation sanitization security

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PROMPT

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Validate and sanitize user input. Techniques: 1. Whitelist allowed input. 2. Validate data types and formats. 3. Length restrictions. 4. Regex for pattern matching. 5. Sanitize HTML to prevent XSS. 6. Parameterized queries for SQL injection. 7. Validate on client AND server. 8. Contextual output encoding. Use libraries like Joi, Yup, or validator.js. Never trust user input. Fail securely.

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