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
IdentityForce - IdentityForce provides Identity Theft Protection software to consumers, businesses, organizations, etc.
Google Drive - Access and sync your files anywhere
Trend Micro ID Protection - Trend Micro ID Protection can scan the internet and dark web for any mention of your personal info. Get support and advice if your identity is stolen.
Mega - Secure File Storage and collaboration