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
uProxy - Internet without borders. A safer path to Internet.
Google Drive - Access and sync your files anywhere
Gravity scan - Free malware and vulnerability scanner
Mega - Secure File Storage and collaboration
Marshal - Quickly scan your cloud for exposed sensitive information.