FP-Redemption: Studying Browser Fingerprinting Adoption for the Sake of Web Security

International audienceBrowser fingerprinting has established itself as a stateless technique to identify users on the Web. In particular, it is a highly criticized technique to track users. However, we believe that this identification technique can serve more virtuous purposes, such as bot detection or multi-factor authentication. In this paper, we explore the adoption of browser fingerprinting for security-oriented purposes. More specifically, we study 4 types of web pages that require security mechanisms to process user data: sign-up, sign-in, basket and payment pages. We visited 1, 485 pages on 446 domains and we identified the acquisition of browser fingerprints from 405 pages. By using an existing classification technique, we identified 169 distinct browser fingerprinting scripts included in these pages. By investigating the origins of the browser fingerprinting scripts, we identified 12 security-oriented organizations who collect browser fingerprints on sign-up, sign-in, and payment pages. Finally, we assess the effectiveness of browser fingerprinting against two potential attacks, namely stolen credentials and cookie hijacking. We observe browser fingerprinting being successfully used to enhance web security