1. 1 Anonshare 2.0 P2P Anonymous Browsing History Share Frank Chiang Terry Go Rui Ma Anita Mathew

2. 2 Introduction Motivation  Social network → Common interest → Focused vs. Broad search experience  Share browsing history  Friend to Friend search engine Challenges  Privacy and anonymity concerns  Connecting through NAT/Firewall

3. 3 Project Design Anonymous P2P  TOR (The Onion Router)  STUNT (Simple Traversal of UDP Through NATs and TCP too) Web proxy + Lucene  Index web browsing content  Share history  Customized/Enhanced Ranking User Interface  Local web server search interface

4. 4 System Architecture Browsing History Searching Fetching Pages Receiving URLs Membership

5. 5 STUNT TCP NAT Traversal NAT Peer 1Peer 2 STUNT Server Want to connect Peer 2 Peer 2’s end point Peer 1’s end point

6. 6 Click Ranking N(c/tc) * w1 + N(r) * w2 c: clicks of the URL tc: total clicks in a group r: relevance score of the keyword w1: click weight w2: relevance weight N(x): (x - s) / std - s: the mean of samples - std: the standard deviation of samples

7. 7 Implementation Anonymous P2P  Onion Routing using RSA  TCP NAT Traversal using STUNT  Loopback server  Membership server Lucene  Indexes HTML, PDF and Text documents  Search ranking based on friend clicks & keyword relevance User Interface  Compares Anonshare results with Google  Tracks user preference (Anonshare vs. Google)

8. 8 Summary  Supports Home Users via STUNT  Click Ranking  User-friendly & effective user interface  Evaluation in upcoming week

9. Demo

10. Q & A