1 / 15

Online Social Network (OSN)

Enhancing Security and Privacy in Online Social Networks Sonia Jahid sjahid2@illinois.edu University of Illinois at Urbana-Champaign PhD Forum. Online Social Network (OSN). Motivating Examples. Our Goal …. A Private and Secure Online Social Network.

fulton-lancaster
Download Presentation

Online Social Network (OSN)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Enhancing Security and Privacy in Online Social NetworksSonia Jahidsjahid2@illinois.eduUniversity of Illinois at Urbana-ChampaignPhD Forum

  2. Online Social Network (OSN)

  3. Motivating Examples

  4. Our Goal … A Private and Secure Online Social Network Shift the access enforcement point from the provider to the users

  5. Myself Hybrid Trusted Party Decentralization Availability Access control by others Confidentiality/Integrity Malicious activities Untrusted Party Provider

  6. Complicated OSN Data and Access Control Wall Status Video Link Comment

  7. Our Contribution • Access Control • Attribute-based encryption with efficient revocation • Architecture Design • Distributed hash table • Object oriented data • Efficient algorithm for newsfeed EASiER – ASIACCS 2011 , DECENT – SESOC 2012, CACHET – CoNEXT 2012

  8. Alice’s Status Example GHC Rocks! Friend|Alice|Friend Reference Bob’s Comment

  9. Application? Healthcare

  10. Our Goal • Health Information Exchange • Patient-centric health data through a secure distributed storage service

  11. Challenges • Confidentiality, Integrity, Availability • Private Audit • Anonymous search • Break the glass policy

  12. Private Audit Storage • Properties • Authentication • Access Control • Auditing • Anonymity • Concept • Revocable Anonymity Access Data Doctor Access Data Nurse A0danc*#-3948sk3m4lksfmÂp Logging Information

  13. Anonymous Search • Properties • Anonymity • Efficiency • Correctness • Concept • Public Key Encryption Keyword-based search • Private Information Retrieval Storage Alice, Lab

  14. Break the Glass Policy • Properties • Emergency access on data • Auditing Alice’s Data

  15. Research Summary • Techniques to enhance security and privacy of a social network • Challenges and application of such techniques in healthcare domain Sonia Jahid http://www.soniajahid.com sjahid2@illinois.edu

More Related