You may want to activate the two-factor authentication on Dropbox now. If you wouldn't want to find your files online, a posted document on the pastebin prior that contains 400 Dropbox passwords and usernames, which the uploader declares that it is just a small fraction of the 7 million accounts because of the current massive hack attack. The uploader has been demanding Bitcoin donations in trade for more accounts, so he could get enormous amount of money, he threatened to upload another batch of log-in accounts the same day. It is still not clear how the hacker or the hackers got the usernames and passwords of the Dropbox accounts, at the moment, the cloud provider explained that Dropbox itself has not been compromised.

Dropbox released an update, it again stated that it has not been compromised, in a blog post, the company explains that security solutions are in place to identify hacked accounts with stolen log-in info from other websites. According to the company's representative, "These usernames and passwords were unfortunately stolen from other services and used in attempts to log in to Dropbox accounts. We'd previously detected these attacks and the vast majority of the passwords posted have been expired for some time now. All other remaining passwords have been expired as well. Still want to ensure your account's safety anyway? Head over to the Dropbox's detailed explanation on how to turn on two-step authentication. Hopefully, when you log in to do so, the service has also restored any file a recent bug might have deleted from your folder."

The previous attack shows the celebrity photo scandal in two months ago, where 12 famous superstars' iCLoud accounts were hacked and leaked in different websites their private photos by an unidentified hacker. How can users protect themselves from hackers from accessing their personal data, it is suggested that they set up two steps identification and verification on their account, and all other accounts with the likes of iCloud and Dropbox.