Dropbox accidentally dropped the need for password authentication this past Sunday so anyone could log into anyone else’s Dropbox account with any password—all they’d need was an email address. This lasted four hours and, according to Dropbox, less than 1% of users were affected. Still, this is another good reason why you should add an extra layer of security to the data in your Dropbox—particularly if you’re putting sensitive data in there.
Quelle: lifehacker.com

Sicherheitskritische Daten unbedingt verschlüsselt auf Dropbox ablegen! Der oben verlinkte Artikel „Add an extra leyer of security“ gibt dazu Tips & Tools.