If you use Dropbox for your own purposes or while working with us on a project, be advised about a new scam email with a subject “Please Update Your Expired Dropbox Password.” If you open it, do not click on any links. The link will take you to a hacked web site that distributes malware.
Stay safe, go directly to Dropbox.com if you need to make any changes to your account.
Source: Dynamoo’s Blog