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
Robinhood - Free stock trading service.
Google Drive - Access and sync your files anywhere
Personal Capital - Take control of your money now with Personal Capital. Manage assets and investments, get objective advice and strategies, all in one place.
Mega - Secure File Storage and collaboration
MetaTrader5 - World-leading multi-asset platform that allows trading Forex, Stocks, Futures and CFDs.