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.
Mercury - Mercury is banking* for startups
Dropbox - Online Sync and File Sharing
Brex - The first corporate card for startups
Google Drive - Access and sync your files anywhere
Qonto - The neobank for SMEs and freelancers
Mega - Secure File Storage and collaboration