How can PHP developers prevent sensitive data leakage in login forms?

To prevent sensitive data leakage in login forms, PHP developers should avoid displaying error messages that reveal whether the username or password is incorrect. Instead, provide a generic error message to users. Additionally, use secure methods to handle and store user credentials, such as hashing passwords before storing them in the database. 

// Example of preventing sensitive data leakage in a login form

// Check if the username and password are correct
if ($username === $storedUsername && password_verify($password, $storedPassword)) {
    // Successful login
    echo "Welcome back!";
} else {
    // Generic error message to prevent data leakage
    echo "Invalid username or password. Please try again.";
}

Keywords

PHP security data leakage encryption password hashing

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