According to some internet news (*1), the hacker put the criminal declaration which hacked more than 7,000,000 Dropbox accounts on the web. Dropbox accounted “Dropbox wasn’t haced” in Official blog.
At least, please consider to enable
2 step verification system for Dropbox!
By this system, the Dropbox account will be locked not only the password but also the device or software registration system.
Thus, your account can prevent from sign in unknown device or software. About how to enable it, please see the following web site.
There are 2-step verification for popular cloud services, such as Facebook and Google.
Please enable it as much as possible!
14th October, 2014 Chief of Information Processing Office: Kitani.