Okay, after some research this might be aftermath from a breach that happened last year: http://arstechnica.com/security/2012/07/dropbox-hires-outside-experts-t

Okay, after some research this might be aftermath from a breach that happened last year: http://arstechnica.com/security/2012/07/dropbox-hires-outside-experts-to-investigate-possible-e-mail-breach/ http://arstechnica.com/security/2012/07/dropbox-hires-outsid... Though I wonder why I start receiving spam now (almost a year later). And I wonder how it hits all my Dropbox-accounts despite Dropbox claiming only "some" addresses were lost back then. It doesn't quite add up to me, and I also don't like that the relevant threads on the dropbox-forum (that the various blog-posts link to) seem to be deleted.