Risk-Driven Compliant Access Controls for Clouds

There is widespread agreement that Cloud computing has proven cost cutting and agility benefits. However, security and regulatory compliance issues are continuing to challenge the wide acceptance of such technology both from social and commercial stakeholders. An important factor behind this is the fact that Clouds, and in particular public Clouds, are usually deployed and used within broad geographical or even international domains. This implies that the exchange of private and other protected data within the Cloud environment would be governed by multiple jurisdictions. These jurisdictions have a great degree of harmonisation, however, they present possible conflicts that are difficult to negotiate at run time. So far, important efforts have been taken in order to deal with regulatory compliance management for large distributed systems. However, measurable solutions are required for the context of Cloud. In this position paper, we propose an approach that starts with a conceptual model of explicit regulatory requirements for exchanging private data on a multijurisdictional environment and build on it in order to define metrics for noncompliance or risks to compliance. These metrics will be integrated within usual data access-control policies and will be checked at policy analysis time before a decision to allow/deny the data access is made.