If you're using Dropbox, OneDrive, Google Drive or other consumer-grade file sync and sharing cloud applications, listen up! These applications pose a huge threat to your company because company data can be spread far and wide without central oversight of what information is being shared with whom. Further, over 7 MILLION Dropbox accounts have been hacked, giving cybercriminals a path into those companies' networks.
This is even MORE important if your company has access to and/or stores financial, medical or other sensitive data using a file-sharing application. Using applications like these are a clear and direct violation of data breach and compliance laws. The bottom line is DON'T USE THEM FOR COMPANY DATA and use only company-approved, business-grade file-sharing applications.