Skyhigh Networks which was mentioned in my previous post is one example of a Cloud Access Security Broker. There are several other companies in this field – NetSkope, Bitglass, Palerra, CipherCloud, Elastica, Adallom, Zscaler, some more familiar than others.
Gartner says the penetration will be 25% in the enterprise in 2016. Here’s a comparison table.
There is considerable scope for innovation in this space based on different user requirements – for instance the amount and type of sharing of the data affects the architecture. Homomorphic encryption while theoretically possible is not yet practical. I expect to see more differentiation before consolidation of different technologies in the domain.