Protecting Privacy from Continuous High-Resolution Satellite Surveillance

Chun, Soon Ae; Atluri, Vijayalakshmi

doi:10.1007/0-306-47008-x_21

Cited by 17 publications

(19 citation statements)

References 9 publications

(8 reference statements)

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“…Spatially aware access control mechanisms can be traced back to [19,5] (which address the information sharing concerns of satellite images in Geographical Information Systems) or [33,42] (which propose architectures for locationbased applications in wireless local networks).…”

Section: Related Workmentioning

confidence: 99%

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Access control models for geo-social computing systems

Tarameshloo

Fong

2014

Proceedings of the 19th ACM Symposium on Access Control Models and Technologies

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A Geo-Social Computing System (GSCS) allows users to declare their current locations, and uses these declared locations to make authorization decisions. Recent years have seen the emergence of a new generation of social computing systems that are GSCSs.This paper proposes a protection model for GSCSs. The protection system tracks the current locations of users and a knowledge base of primitive spatial relations between locations. Access control policies can be formulated by the composition of primitive spatial relations. The model is extended to account for Geo-Social Network Systems (GSNSs), which track both a spatial knowledge base and a social network. A policy language for GSNSs is proposed for specifying policies that combine both social and spatial constraints.

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Section: Related Workmentioning

confidence: 99%

“…There has been a growing body of literature on spatially aware access control models [19,5,33,42,27,10,11,16,34,2,6,21,1,30]. Building on these insights, this study of GSCSs aspires to further our understanding of spatiallyaware access control in two areas.…”

Section: Introductionmentioning

confidence: 99%

Access control models for geo-social computing systems

Tarameshloo

Fong

2014

Proceedings of the 19th ACM Symposium on Access Control Models and Technologies

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“…Some of them such as the Geospatio-temporal Authorization Model (GSAM) focus on the visualization of raster geo-spatial data like multi-resolution satellite imagery (see [15], [16], [17] and [3] for details) while others like Geo-RBAC [2,18] may be described as Location Based Systems. On our side, we proposed an extension to the generic Or-BAC model to derive a geospatial context aware access control system ( [4] and [5]).…”

Section: Related Workmentioning

confidence: 99%

Enforcing Protection Mechanisms for Geographic Data

Gabillon

Capolsini

2012

Web and Wireless Geographical Information Systems

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Abstract. In the framework of a geographic application displaying maps, there are several solutions for protecting a sensitive object. Sensitive objects can be hidden, masked, blurred or even replaced by fake objects. In this paper we suggest a framework to specify protection mechanisms to enforce whenever a prohibition is derived from the security policy. This framework includes (i) logical rules allowing us to derive protection mechanisms from prohibitions, and (ii) an algorithm which builds the map to display, according to the derived protection mechanisms.

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“…In this section, we review and extend the GeoSpatial Authorization Model (GSAM), proposed earlier by Chun and Atluri [9]. For providing controlled access to geospatial images, GSAM uses publicly available user information, such as property ownership and voter registration records to determine the spatial extent that the user is allowed to access.…”

Section: Geospatial Authorization Modelmentioning

confidence: 99%

“…Recently, Chun and Atluri [9] have proposed an authorization model to provide access control for geospatial images based on their resolution, called GeoSpatial Authorization Model (GSAM). In GSAM, authorizations let one to specify that a subject is allowed to view a specific image or region with a certain resolution, or allowed to overlay a set of images with a specific resolution.…”

Section: Introductionmentioning

confidence: 99%

Uniform Indexing for Geospatial Data and Authorizations

Atluri

Mazzoleni²

2003

Research Directions in Data and Applications Security

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High-resolution satellites are promising technologies to bolster global transparency by providing unprecedented access to accurate and timely information. A significant number in this satellite fleet are owned by private organizations, which can collect images of human activities and the environment, and make them commercially available around the globe. Uncontrolled dissemination of this information may have grave implications on national security and personal privacy, as some governments and private groups may exploit this information for aggressive purposes. Formal policies for prohibiting the release of imagery beyond a certain resolution, and notifying when an image crosses an international boundary or when such a request is made, are beginning to emerge. As such, there is a need for effective and efficient schemes for facilitating controlled dissemination of satellite imagery and the information products generated from it. Unlike conventional authorizations that can be implemented as access control lists, since authorizations on geospatial imagery involve spatial attributes, managing the authorization base and searching for authorizations based on the spatial extent require a spatial indexing structure. An access request thus requires a search on two index structures, one for the authorizations, and the other for the image database. In this paper, we propose an indexing structure, called RMXquadtree, that is capable of indexing multi-resolution satellite imagery and additionally allow representing authorizations on top of it. By employing a uniform index for both image database and authorization base, access requests can be processed more efficiently as only one index structure need to be traversed. We demonstrate how authorizations with privilege modes such as view and zoom-in can be implemented using the RMX -quadtree.

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Protecting Privacy from Continuous High-Resolution Satellite Surveillance

Cited by 17 publications

References 9 publications

Access control models for geo-social computing systems

Access control models for geo-social computing systems

Enforcing Protection Mechanisms for Geographic Data

Uniform Indexing for Geospatial Data and Authorizations

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