Data provenance in cloud

One of the barriers of cloud adoption is the security of data stored in the cloud. In this chapter, we introduce data provenance and briefly show how it is applicable for data security in the cloud. Building on this, we discuss the underlying question of how data provenance, required for empowering data security in the cloud, can be acquired. The strengths and weaknesses of two methodologies for provenance acquisition, active collection and reconstruction, are discussed. The goal is to provide an understanding on the current state-of-the-art for generating provenance, such that better methodologies and solutions can be developed.