Security will increasingly move from being perimeter- and container-centric towards being data-centric. The decreasing importance of physical locale and networks will inevitably mean that the data must increasingly protect itself. Cryptography continues to underpin some of the most important security technologies around, but it is now rightly seen as a means, not an end. The objectives of data security have been winding their way up the stack from network zones and server access control lists to Layer 7 and beyond. Data leak prevention (DLP) is a good example.”]