What are security considerations for focus and blur events?

// Example of handling focus and blur events
document.addEventListener('DOMContentLoaded', function() {
    const inputField = document.getElementById('inputField');

    inputField.addEventListener('focus', function() {
        console.log('Input field focused');
        // Security consideration: Make sure sensitive information is hidden
        inputField.setAttribute('type', 'text');
    });

    inputField.addEventListener('blur', function() {
        console.log('Input field blurred');
        // Security consideration: Clear any potentially sensitive information
        inputField.value = '';
    });
});