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
Product School - The global leader in product management training
Google Drive - Access and sync your files anywhere
PM Starter Pack - Practical guide on how to get started in product management
Mega - Secure File Storage and collaboration
Software Product Management Stack - Resources & tools to help you manage your software product