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
LogMeIn Central - LogMeIn Central is a comprehensive endpoint management software that easily helps IT professionals manage and monitor their organization’s endpoint infrastructure.
Google Drive - Access and sync your files anywhere
Kaspersky Endpoint Security - Our HuMachine™-based, Next Generation endpoint security delivers multi-layered protection for multiple platforms – including Linux servers and endpoints – to detect suspicious behavior and block threats, including ransomware.
Mega - Secure File Storage and collaboration
Panda Security - Panda Security is an antivirus and cyber security solution.