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Securing the Extended Enterprise: A Method for Analyzing External Insider Threat
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Author(s): Virginia N. L. Franqueira (University of Twente, The Netherlands), André van Cleeff (University of Twente, The Netherlands), Pascal van Eck (University of Twente, The Netherlands)and Roel Wieringa (University of Twente, The Netherlands)
Copyright: 2012
Pages: 28
Source title:
Strategic and Practical Approaches for Information Security Governance: Technologies and Applied Solutions
Source Author(s)/Editor(s): Manish Gupta (State University of New York at Buffalo, USA), John Walp (M&T Bank Corporation, USA)and Raj Sharman (State University of New York, USA)
DOI: 10.4018/978-1-4666-0197-0.ch012
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Abstract
In extended enterprises, the traditional dichotomy between insiders and outsiders becomes blurred: consultants, freelance administrators, and employees of business partners are both inside and outside of the enterprise. As a consequence, traditional controls to mitigate insider and outsider threat do not completely apply to this group of individuals, and additional or improved solutions are required. The ISO 27002 security standard, recognizing this need, proposes third-party agreements to cover security requirements in B2B relationships as a solution, but leaves open how to realize them to counter security problems of inter-organizational collaboration. To reduce this gap, this chapter presents a method for identifying external insiders and analyzing them from two perspectives: as threats and as possible mitigation. The output of the method provides input for further engineering of third-party agreements related to non-measurable IT security agreements; the authors illustrate the method using a manufacturer-retailer example. This chapter also provides an overview of the external insider threat, consisting of a review of extended enterprises and of challenges involved with external insiders.
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