Problem/Use Case:
Default error messages reveal whether the username or password is wrong — a security risk.
Snippet:
// Custom login error message
function custom_login_errors() {
return 'Something went wrong. Please try again!';
}
add_filter('login_errors', 'custom_login_errors');
Explanation:
Replaces detailed error messages with a generic one.
Where to Place It:
In functions.php.
Bonus Tip:
You can also log failed login attempts for extra monitoring.