The blog faylohranilische Dropbox says that the leak was in several stages. First, attackers (their names are not disclosed) stole email addresses and passwords of multiple websites not associated with file storage Dropbox. Then cracks found that some couples "username password" and suitable for Dropbox, since many users use the same password on multiple sites.
Among these people there was also an employee Dropbox. Internet resource Dropbox users brought an apology and promised to strengthen security measures. In addition to the password, the service will require the user to confirm the identity of the other. In the Dropbox page appears with information about who, where and when connected to your account.