![]() Randomization is possible thanks to the following properties of browsers implementations: (i) some functions have a nondeterministic specification, but a deterministic implementation (ii) multimedia functions can be slightly altered without deteriorating user’s perception. We add randomness in the computation of selected browser functions, in order to have them deliver slightly different answers for each browsing session. Our work aims at mitigating the risk of browser fingerprinting for users privacy by ‘breaking’ the stability of a fingerprint over time. Consequently, the fingerprint can be used to track users. A small number of queries on these interfaces are sufficient to build a fingerprint that is statistically unique and very stable over time. The rich programming interfaces (APIs) provided by web browsers can be diverted to collect a browser fingerprint.
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