Bsides Exeter 2026

Your Browser is Snitching: Tracking Without Cookies
2026-04-25 , Seminar Room 7

This talk explores the world of browser fingerprinting, how seemingly identical devices can be uniquely identified using subtle characteristics exposed by modern browsers. We will examine the specific attributes that contribute to fingerprint uniqueness, how tracking systems leverage them at scale, and the effectiveness of current evasion and anti-fingerprinting techniques.


This talk explores the world of browser fingerprinting, how seemingly identical devices can be uniquely identified using subtle characteristics exposed by modern browsers. We will examine the specific attributes that contribute to fingerprint uniqueness, how these can be leveraged by tracking systems and demonstrating these signals inside a browser.

Furthermore, the talk will dive into current evasion and anti-fingerprinting techniques, demonstrating what steps should be taken to reduce and avoid fingerprinting. Including ways to obfuscate or standardise signals.


Technical Level: 4 - Complex and quite technical, deeper dive into subjects

Adam is a penetration tester with a background in software development. His work focuses on web application and infrastructure testing, amongst other testing. He is also a professionally registered cyber security practitioner.