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Several top websites use device fingerprinting to secretly track users
http://www.spacewar.com/reports/Several_top_websites_use_device_fingerprinting_to_secretly_track_users_999.html
Several top websites use device fingerprinting to secretly track users
by Staff Writers
Leuven, Belgium (SPX) Oct 15, 2013
A new study by KU Leuven-iMinds researchers has uncovered that 145 of the Internet's 10,000 top websites track users without their knowledge or consent. The websites use hidden scripts to extract a device fingerprint from users' browsers. Device fingerprinting circumvents legal restrictions imposed on the use of cookies and ignores the Do Not Track HTTP header. The findings suggest that secret tracking is more widespread than previously thought.
Device fingerprinting, also known as browser fingerprinting, is the practice of collecting properties of PCs, smartphones and tablets to identify and track users. These properties include the screen size, the versions of installed software and plugins, and the list of installed fonts.
A 2010 study by the Electronic Frontier Foundation (EFF) showed that, for the vast majority of browsers, the combination of these properties is unique, and thus functions as a 'fingerprint' that can be used to track users without relying on cookies. Device fingerprinting targets either Flash, the ubiquitous browser plugin for playing animations, videos and sound files, or JavaScript, a common programming language for web applications.
This is the first comprehensive effort to measure the prevalence of device fingerprinting on the Internet. The team of KU Leuven-iMinds researchers analysed the Internet's top 10,000 websites and discovered that 145 of them (almost 1.5%) use Flash-based fingerprinting.
<snip>
Several top websites use device fingerprinting to secretly track users
by Staff Writers
Leuven, Belgium (SPX) Oct 15, 2013
A new study by KU Leuven-iMinds researchers has uncovered that 145 of the Internet's 10,000 top websites track users without their knowledge or consent. The websites use hidden scripts to extract a device fingerprint from users' browsers. Device fingerprinting circumvents legal restrictions imposed on the use of cookies and ignores the Do Not Track HTTP header. The findings suggest that secret tracking is more widespread than previously thought.
Device fingerprinting, also known as browser fingerprinting, is the practice of collecting properties of PCs, smartphones and tablets to identify and track users. These properties include the screen size, the versions of installed software and plugins, and the list of installed fonts.
A 2010 study by the Electronic Frontier Foundation (EFF) showed that, for the vast majority of browsers, the combination of these properties is unique, and thus functions as a 'fingerprint' that can be used to track users without relying on cookies. Device fingerprinting targets either Flash, the ubiquitous browser plugin for playing animations, videos and sound files, or JavaScript, a common programming language for web applications.
This is the first comprehensive effort to measure the prevalence of device fingerprinting on the Internet. The team of KU Leuven-iMinds researchers analysed the Internet's top 10,000 websites and discovered that 145 of them (almost 1.5%) use Flash-based fingerprinting.
<snip>
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