For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Dropbox - Online Sync and File Sharing
Google Pay - Make secure payments right through your Android device.
Google Drive - Access and sync your files anywhere
AirPay - Integrate all payment channels via one single API
Mega - Secure File Storage and collaboration
ePayments - ePayments is a convenient digital wallet that is specially made for those people who want to make money on the internet.