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How do I detect and prevent SQL injection vulnerabilities?

Asked on Sep 27, 2025

Answer

To detect and prevent SQL injection vulnerabilities, use parameterized queries and input validation. These techniques ensure that user inputs are treated as data rather than executable code, thus protecting your database.

<!-- BEGIN COPY / PASTE -->
    // Example of a parameterized query in PHP using PDO
    $stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
    $stmt->execute(['username' => $userInput]);
    $result = $stmt->fetchAll();
    <!-- END COPY / PASTE -->

Additional Comment:

Always use parameterized queries or prepared statements to separate SQL logic from data.
Validate and sanitize user inputs to ensure they meet expected formats and constraints.
Regularly update your database and server software to patch known vulnerabilities.

✅ Answered with Security best practices.

Ask any question about Website Security here... and get an instant response.

How do I detect and prevent SQL injection vulnerabilities?

Asked on Sep 27, 2025

Answer

Additional Comment:

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