Almost all the recent news and tweets sidestep around the main question, which should be answered in a FAQ somewhere: If I have copyrighted data on my Dropbox

Almost all the recent news and tweets sidestep around the main question, which should be answered in a FAQ somewhere: If I have copyrighted data on my Dropbox folder, and the system detects it, what happens? If I sync the copyrighted data with several of my computers, does that count as sharing? Yes, I know what hashing is and yes, it seems the original reporter of the DMCA may have shared the file link through email or a website. Still, I need assurance that my data (including the copyrighted ones) will be backed up at Dropbox and available for my use at my leisure, indefinitely -- provided I don't "share" them in any public way. Side note: all of my data on Dropbox is encrypted by a separate system, so it's unlikely that I'll be affected, but I still am interested in the issue.