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Thoughts on Access Control in Enterprise Recommender Systems

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Some Thoughts and Aspects on Access Control Related Issues for Enterprise Recommender Systems …

Some Thoughts and Aspects on Access Control Related Issues for Enterprise Recommender Systems

This presentation was given on the 10th of July at the Mendeley event "Workshop on Academic-Industrial Collaborations for Recommender Systems"

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  • 1. gefördert durch das Kompetenzzentrenprogramm Heimo Gursch Some Thoughts and Aspects on Access Control Related Issues for Enterprise Recommender Systems www.know-center.at 10 July 2013 Workshop on Academic-Industrial Collaborations for Recommender Systems © Know-Center 2013 Thoughts on Access Control in Enterprise Recommender Systems
  • 2. © Know-Center 2013 2 Agenda  What am I working on?  Why are we working on that?  What are the major concerns?  Access Control  What are the problems?  What can be done about it?  Recommender  Why use them?  What can they achieve?
  • 3. © Know-Center 2013 3 Our Project & my background  Project Setting  Four large German Companies  Amounts of information is increasing  Enterprise search is not enough  Project Goals  Single entry point to all information  Help engineers to find whatever they are looking for  Create a prototype that is capable of  Enterprise Search  Recommender  Extract, show and use relations between data
  • 4. © Know-Center 2013 4 The Problems – Company Policy
  • 5. © Know-Center 2013 5 The Problems – What is Going on
  • 6. © Know-Center 2013 6 The big trade-off  Current situation is unsatisfying  Recommender would bring “too much” information  Recommend to user only Information where access is possible Closed Open Information
  • 7. © Know-Center 2013 7 Access Control Concerns  Access Control is a “necessary evil” to ensure  Confidentiality  Traceability  Status quo  Role based access control (RBAC)[1]  1000s of roles  SSO only over some systems  Problems when changes are necessary  Solutions  Adapt the current system  Start over clean… [1] D.F. Ferraiolo and D.R. Kuhn, “Role-Based Access Controls”, in 15th National Computer Security Conference, 1992, Baltimore MD, Pages 554-563
  • 8. © Know-Center 2013 8 Possible Solutions[2]  Attribute Based Access Control  Problem: Decide on attributes  Authorization Based Access Control  Abbreviated ABAC or ZBAC  User checks out token to get access  Token holds all the information needed by target systems  Token or parts of it can be passed on  First realization[3]  SOAP Messages with X.509 Certificate [2] A.H. Karp, H. Haury, and M.H. Davis, “From ABAC to ZBAC: The Evolution of Access Control Models From ABAC to ZBAC”, 2009 [3] J. Li and A. H. Karp, “Zebra Copy : A Reference Implementation of Federated Access Management 1”, 2007
  • 9. © Know-Center 2013 9 Bring in the Recommender…  Recommender can help with questions like…  Has anybody done something with…  Give me more like that  Combining -based Recommenders  Content-based: Short-term model  Knowledge-based: Long-term model  “Knowledge”  Job description  Assigned tasks  … Content Knowledge
  • 10. © Know-Center 2013 10 Content & Knowledge-based Recommender  User independent  Serendipity problem  Model overcomes the new user problem  Limitation of content analyse  Fast integration of new items  Tweaks by the user are possible  Changing user interest
  • 11. © Know-Center 2013 11 Combine Recommender & Access Control  Criteria for the solution  High-performance solution that is parallelisable  Ensure access control in any case  Possible solutions  Check access control before anything else is done  Use a multi-criteria recommender system  Multi-criteria recommender system  Define a aggregation function  Base recommendation on  Access control  Short-time model  Long-time model
  • 12. © Know-Center 2013 12 Key aspect for success  Give possible solution  Show that infrastructure is the result of the problem not the cause  Need to know vs. good to know  Show potential  Produce a prototype that consists of  Search  Recommender  Access-control concepts
  • 13. © Know-Center 2013 13 Summary & Closing Arguments  Project Settings  Problems and the current situation at our partners  User/role management  Information needs of employees  Situation we work towards  Change access management  Introduce the recommender systems  Improve enterprise search that employees actuality use it
  • 14. gefördert durch das Kompetenzzentrenprogramm Heimo Gursch Some Thoughts and Aspects on Access Control Related Issues for Enterprise Recommender Systems www.know-center.at 10 July 2013 Workshop on Academic-Industrial Collaborations for Recommender Systems © Know-Center 2013 Thoughts on Access Control in Enterprise Recommender Systems

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