Dropbox's struggle: Getting off the apps blacklist By: CNBC.com News November 03, 2015 at 07:25 AM EST Dropbox is having difficulty justifying its $10B valuation, largely because many businesses don't trust the file-sharing and storage app. Read More >> Related Stocks: Alphabet-A Apple Citrix Systems Facebook Microsoft Mobileiron Inc News Corporation Salesforce Vmware Inc Yahoo