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						SPRINGL PROGRAM
                                                  NOV. 4, 2008
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      8:15am-8:30am 	Opening Remarks

      8:30am-10:30am 	Inaugural Session for the SPRINGL 2008 Workshop Series

      Key note presentation
      Understanding the Privacy- Efficiency Trade-off in Location-Based Queries
		  Gabriel Ghinita (Purdue University, USA)
      		  Abstract: Mobile devices with global positioning capabilities (e.g., GPS)
		  allow users to ask queries relative to their present location. Since certain
		  queries may be privacy-sensitive, it is important to protect the identity of 
		  the users who send requests for Location-based Services (LBS). Instead of 
		  reporting the exact user location to the LBS provider, existing privacy-preserving
		  techniques either perturb or encrypt the location data.
      		  Current LBS privacy solutions fall into several categories, based on the type 
		  of location transformation they employ, and the system architecture they rely 
		  on. In this position paper, we introduce a taxonomy of LBS privacy solutions, 
		  and discuss the privacy-efficiency trade-offs achieved by various techniques. 
		  We also identify several open problems, and propose some interesting directions
	          for future research.
		
      Security and Privacy for Geospatial Data ?Concepts and Research Directions
      (Inaugural Paper for the ACM SPRINGL Workshop)            
		   Elisa Bertino (Purdue University, USA)
                   Michael Gertz (University of California at Davis, USA)
                   Bhavani Thuraisingham (University of Texas at Dallas, USA)
                   Maria L. Damiani (University of Milano, Italy)

      10:30am-11:00am 	Coffee Break

      11:00am-12:15am 	Session: Access Control Model for GIS and Pervasive Environments

      Towards an ODRL Web Map Service Profile
                  A. Gabillon (Universit?de la Polyn?sie Fran?aise, French Polynesia)
                  P.Capolsini (Universit?de la Polyn?sie Fran?aise, French Polynesia)
      QACBAC: An owner-centric QoC-Aware Context-Based Access Control Model for Pervasive Environments
                  J. Bringel Filho (Grenoble University, France)
                  H. Martin (Laboratoire d'Informatique de Grenoble, France)
      Towards movement-aware access control
                  Maria L. Damiani (University of Milano, Italy)
                  Claudio Silvestri (University of Milano, Italy)

      12:15am-1:00pm Lunch

      1:00pm-2:30pm Session: Location Privacy

      Towards a Scalable Model for Location Privacy
                  N. Poolsappasit (Colorado State University, USA)
                  I. Ray (Colorado State University, USA)
      Towards Trajectory Anonymization: a Generalization-Based Approach
                  Y. Saygin (Sabanci University, Turkey)
                  E. Nergiz (Purdue University, USA)
                  M. Atzori (ISTI-CNR, Italy)
      Position Transformation: A Location Privacy Protection Method for Moving Objects
                  Dan Lin (Missouri University of Science and Technology, USA)
                  Elisa Bertino (Purdue University, USA)
                  Reynold Cheng (University of Hong Kong, China)
                  Sunil Prabhakar (Purdue University, USA)

      2:30pm-3:00pm Coffee Break

      3:00pm-4:00pm Session: Policies

      Privacy Policies Compliance Across Digital Identity Management Systems
                  A. C. Squicciarini (Penn State University, USA)
                  A. Czeskis (University of Washington, USA)
                  A. Bhargav-Spantzel (Intel Corporation)
      Consistency Checking Role Assignments in Inter-Organizational Collaboration
                  P. El Khoury (SAP Research and LIRIS University of Lyon1, France)
                  E. Coquery (University Lyon 1, France)
                  M.-S. Hacid (Lyon University ?UCBL, France)

      4:00pm-4:30pm Business Meeting and Closing Remarks