Mail in Apple iOS before 7.1.2 advertises the availability of data protection for attachments but stores cleartext attachments under mobile/Library/Mail/, which makes it easier for physically proximate attackers to obtain sensitive information by mounting the data partition.
http://www.securitytracker.com/id/1030500
http://www.securityfocus.com/bid/68276
http://www.securityfocus.com/bid/67263
http://www.andreas-kurtz.de/2014/04/what-apple-missed-to-fix-in-ios-711.html
http://support.apple.com/kb/HT6441
http://archives.neohapsis.com/archives/bugtraq/2014-09/0106.html
http://archives.neohapsis.com/archives/bugtraq/2014-06/0174.html