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.
Check Point Quantum Security Gateway - Quantum is the next-generation VPN security gateway that delivers the core security benefits of a firewall, next-generation IPS, antivirus, and Web-filtering without sacrificing performance.
Dropbox - Online Sync and File Sharing
DataSunrise Database Security - DataSunrise Database Security Software secures the databases and data in real-time with high performance.
Google Drive - Access and sync your files anywhere
Enterprise Security - Enterprise Security is a product of Protegrity that allows users to tailor the protection of their sensitive data to suit their needs.
Mega - Secure File Storage and collaboration