Research project: TRVE Data: Placing a bit less trust in the cloud

"Cloud and software-as-a-service applications such as Google Docs, Evernote, iCloud and Dropbox are very convenient for users, but problematic from a security point of view. As these services process data in unencrypted form on their servers, users must blindly trust the cloud provider to prevent unauthorised access and to maintain integrity of the data. A security breach of the cloud provider could have disastrous consequences."

https://www.cl.cam.ac.uk/research/dtg/trve/