
435
33
Cloud-Centric Assured
Information Sharing
for Social Networks
33.1 INTRODUCTION
The advent of cloud computing and the continuing movement toward SaaS (software as a service)
paradigms has posed an increasing need for assured information sharing (AIS) as a service in the
cloud. The urgency of this need was voiced in April 2011 by National Security Agency (NSA) Chief
Information Ofcer Lonny Anderson in describing the agency’s focus on a cloud-centric approach
to information sharing with other agencies (Hoover, 2011). Likewise, the Department of Defense
(DoD) has been embracing cloud computing paradigms to more efciently, economically, exib ...