After collecting a sample of 470161 fingerprints, they measured at least 18.1 bits of entropy possible from browser fingerprinting, but that was before the advancements of canvas fingerprinting, which claims to add another 5.7 bits. In 2010, Electronic Frontier Foundation launched a website where visitors can test their browser fingerprint. In 2005, researchers at University of California, San Diego showed how TCP timestamps could be used to estimate the clock skew of a device, and consequently to remotely obtain a hardware fingerprint of the device. Since its introduction in the late 1990s, client-side scripting has gradually enabled the collection of an increasing amount of diverse information, with some computer security experts starting to complain about the ease of bulk parameter extraction offered by web browsers as early as 2003. ( March 2020)īasic web browser configuration information has long been collected by web analytics services in an effort to measure real human web traffic and discount various forms of click fraud.
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Please help update this article to reflect recent events or newly available information. This may allow a service provider to detect and prevent identity theft and credit card fraud, : 299 but also to compile long-term records of individuals' browsing histories (and deliver targeted advertising : 821 : 9 or targeted exploits : 8 : 547 ) even when they are attempting to avoid tracking – raising a major concern for internet privacy advocates. : 878 : 1ĭevice fingerprints can be used to fully or partially identify individual devices even when persistent cookies (and zombie cookies) cannot be read or stored in the browser, the client IP address is hidden, or one switches to another browser on the same device. A browser fingerprint is information collected specifically by interaction with the web browser of the device. The information is usually assimilated into a brief identifier using a fingerprinting algorithm.
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Information collected about a remote computing device for the purpose of full or partial identificationĪ device fingerprint or machine fingerprint is information collected about the software and hardware of a remote computing device for the purpose of identification.