Please regularly keep an eye on your internet usage by logging in and checking your customer account.
Ensure that you are not leaving any downloads or torrent applications running in the background when not required.
Disable automatic software updates for software applications, Windows, and Mac so you can monitor when downloads are being used.
Check if there are any automatic online backups being used for Windows, Dropbox, iCloud, Photo Steam Google Drive, etc.
If you are using Wi-Fi, please ensure that you have password security enable so only authorised users can access your internet connection.
If you have any mobile devices connected to Wi-Fi, please check settings for Photo Steam, Google Photos, and other applications for automatic backups or updates.