one important thing to note is that yeah, it's important to encrypt the backup (@Mac and PC level) as it syncs with the cloud, but - stating the obvious - the backed up file, or the info, in whatever form it is collected is on your phone, where it can be transmitted ... or not... need a good sniffer to check that. Like I described in a post above, you can view iPhone connections with fiddler (MS utility)... but it could take ages until you find out about this particular transmission, if it ever happens.