Security ,"in the cloud" is really more a making of the cloud.

If I setup a raspberry pi and follow basic security, why would I need all those encrypted bits to sit on someone else's server?

Infact, the cloud create a security issue just by aggregating everyone's stuff and exclaiming ,, Hey guys! We got all the juicy data here!

I know that's security through obscurity but the only reason apple has been secure from. Malware for a long time was it's limited attractiveness.