June 2011

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AFSecurity Seminar: Dynamic Access Control

Date: Monday 6 June 2011.

Location: Meeting room Awk (3118), Ole-Johan Dahls hus (IfI).


12:00h Welcome at IfI

12:15h Invited talk

TITLE: An Approach To Access Control In Dynamic Environments

ABSTRACT: Traditional access control models such as RBAC are based on the implicit assumption that an administrator can anticipate the legitimate access needs of users and pre-define an access policy that allocates privileges accordingly. However, as business, government and industry become increasingly information-intensive and interconnected, they exhibit a level of dynamism that seriously challenges the validity of this assumption. This talk will review the motivation for developing access control models that can respond to unanticipated changes in users' operational needs without requiring the invention of an administrator. It will review a number of recent proposals that seek to explicitly include a notion of risk to achieve more flexible access decision making. Finally it will present some of our own work that draws on insights from the field of economics and the insurance literature to deliver an access control model where users can acquire unassigned permissions while limiting their power to misuse this dynamic capability.

Presentation slides: Media:AFSec20110606-Dawson-QUT.pdf

SPEAKER: Ed Dawson (QUT)

BIO: Prof. Ed Dawson is an expert in security and cryptography, and works as senior advisor at ISI (Information Security Institute) of QUT (Queensland University of Technology) in Australia. He was director of ISI until 2008, and before that he was director of ISRC (Information Security Research Centre) at QUT.

13:00h Discussion

13:30h End