Difference between revisions of "June 2011"

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12:15h Invited talk
 
12:15h Invited talk
  
'''TITLE:''' Authorisation Models for Dynamic Environments
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'''TITLE:''' An Approach To Access Control In Dynamic Environments
  
 
'''ABSTRACT:''' Traditional authorisation 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 authorisation 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 authorisation model where users can acquire unassigned permissions while limiting their power to misuse this dynamic capability.
 
'''ABSTRACT:''' Traditional authorisation 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 authorisation 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 authorisation model where users can acquire unassigned permissions while limiting their power to misuse this dynamic capability.

Revision as of 06:13, 15 June 2011

AFSecurity Seminar: Dynamic Access Control

Date: Monday 6 June 2011.

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

Agenda

12:00h Welcome at IfI

12:15h Invited talk

TITLE: An Approach To Access Control In Dynamic Environments

ABSTRACT: Traditional authorisation 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 authorisation 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 authorisation model where users can acquire unassigned permissions while limiting their power to misuse this dynamic capability.


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