Author(s): Lukasz Olejnik, Minh-Dung Tran, Claude Castelluccia

Download: Paper (PDF)

Date: 22 Feb 2014

Document Type: Briefing Papers

Additional Documents: Slides

Associated Event: NDSS Symposium 2014


This paper studies how personal data is exchanged by advertising companies via Real Time Bidding (RTB) and Cookie Matching. We show that a large proportion of users’ web histories leaks to 3rd-party companies through RTB, and that users’ browsing history elements are routinely being sold off for less than $0.0005.