This document discusses ensuring accountability for data sharing in the cloud. It proposes a decentralized information accountability framework to track how users' data is used in the cloud. The framework takes an object-centered approach, using JAR capabilities to create dynamic traveling objects that enclose user data and policies. Any access to the data will trigger local authentication and logging within the JARs. Distributed auditing mechanisms are also provided to strengthen user control. Experimental results demonstrate the efficiency and effectiveness of the proposed approaches.