DISK safety in laravel (simple question)

configuration

filesystem.php

'disks' => [

    'local' => [
        'driver' => 'local',
        'root' => storage_path('app'),
        'throw' => false,
    ],

    'file' => [
        'driver' => 'local',
        'root' => storage_path('app/file'),
        'visibility' => 'private',
        'throw' => false,
    ],

env BROADCAST_DRIVER=log CACHE_DRIVER=file FILESYSTEM_DISK=local QUEUE_CONNECTION=sync SESSION_DRIVER=file SESSION_LIFETIME=120

I am staring my first web application in my file laravel is my first framework so i have following question I am using laravel spatie media library and on disk files i storage sensitive data about my clients is my disk configuration save and can samebody (not me) view files sotraged in file disk??