How does securing web apps (CSRF, XSS) interact with Unicode and encodings?

Securing web applications against vulnerabilities such as CSRF (Cross-Site Request Forgery) and XSS (Cross-Site Scripting) is crucial, especially when dealing with Unicode and different encodings. These vulnerabilities can allow attackers to manipulate input that may not be interpreted correctly due to encoding issues.
CSRF, XSS, Unicode, Web Security, Input Validation
<?php // Example of a secure input that prevents XSS function sanitizeInput($data) { return htmlspecialchars($data, ENT_QUOTES, 'UTF-8'); } // Example usage if ($_SERVER["REQUEST_METHOD"] == "POST") { $user_input = sanitizeInput($_POST['input_field']); echo "Sanitized User Input: " . $user_input; } ?>

CSRF XSS Unicode Web Security Input Validation

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