Oft touted on HN here is tarsnap[1] and rsync.net[2]. They both have different pricing models, and both seem to focus on security.<p>[1] - <a href="http://www.tarsnap.com/" rel="nofollow">http://www.tarsnap.com/</a>
[2] - <a href="http://www.rsync.net/" rel="nofollow">http://www.rsync.net/</a>
This could happen to any other online file storage provider too. So depending on your needs, you're probably best off encrypting your files yourself before storing them online.
None. I'm not so hot on Dropbox right now, but they're still probably your best bet.<p>Just encrypt everything even remotely private in an Apple DMG or Truecrypt volume.