Siri in Apple iOS before 9.3.2 does not block data detectors within results in the lock-screen state, which allows physically proximate attackers to obtain sensitive contact and photo information via unspecified vectors.
https://support.apple.com/HT206568
http://www.securitytracker.com/id/1035890
http://lists.apple.com/archives/security-announce/2016/May/msg00002.html