LINCS: Towards building a trustworthy litigation hold enabled cloud storage system

In this paper, we define a model of trustworthy litigation hold management for cloud-based storage systems and identify the key security properties. Based on the model, we propose a trustworthy LIitigation hold eNabled Cloud Storage (LINCS) system. We show that LINCS can provide the required security properties in a strong adversarial scenario, where a plaintiff or defendant colludes with a malicious CSP. Our prototype implementation reveals that the performance overhead of using LINCS is very low (average 1.4% for the user), which suggests that such litigation hold enabled storage system can be integrated with real clouds.