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.
LifeLock - LifeLock is an identity theft protection solution that protects its members' personal information from being used by a third party.
Dropbox - Online Sync and File Sharing
IDShield - IDShield is a platform that offers identity protection, saves people from unauthorized transactions in their name, and protects them from data breaches.
Google Drive - Access and sync your files anywhere
IDStrong - Identity monitoring service that checks if your personal information is stolen, leaked, breached, or exposed.
Mega - Secure File Storage and collaboration