Tech

What is browser fingerprinting and how does it track you?


Scary Cookies Keep track of all your online activities being (slowly) phased out. In recent years, the major web browsers, including Safari and Firefox, has limited the practice. Even Chrome recognizes that cookies have private nightmare. But blocking them only ends one kind of online tracking — others arguably worse.

Fingerprinting, which involves collecting details about your browser or phone settings, falls into this category. The tracking method is largely hidden, there’s not much you can do to stop it, and regulators have done little to limit how companies use it to track you on the internet.

What is fingerprint biometrics?

Exactly configuration of currents and vortices make up your fingerprint that is supposed to be unique to you. Similarly, your browser fingerprint is a collection of information collected from your phone or laptop each time you use it that advertisers can eventually link back to you.

“It takes information about your browser, your network, your device, and combines them together to create a set of features that are virtually unique to you,” said Tanvi Vyas, principal engineer at Firefox. with you. The data that makes up your fingerprint may include the language you use, your keyboard layout, your time zone, whether you have cookies enabled, the version of the operating system your device runs, etc.

By combining all this information into one fingerprint, advertisers can recognize you as you move from one site to the next. A lot of learn fingerprint review has found that about 80 to 90 percent of browser fingerprints are unique. Fingerprinting is usually done by ad-tech companies that insert their code onto web pages. Fingerprint code — comes in the form of multiple scripts, such as FingerprintJS library-To be deployed by dozens of ad technology companies to collect data about your online activity. Sometimes websites have fingerprint scripts on them don’t even know about it. And companies are often unclear and unclear in how they track you.

Once set up, someone’s fingerprints can be combined with other personal information — such as linking fingerprints to existing records or information that data brokers provide. does not clearly hold about you. “Today there are so many data sets and so many other means of connecting fingerprints,” said Nataliia Bielova, a research scientist at France’s National Institute of Digital Science and Technology. your hand with other identifying information. at the French data regulator, CNIL.

Fingerprinting evolved with the evolution of web browsers and is closely tied to the history of the web. As browsers have matured, they have communicated more with servers — through APIs and HTTP headers — about people’s device settings, says Bielova, who Research the development of fingerprints. First Electronic Frontier Foundation (EFF) fingerprint identification since 2010. Since then, fingerprinting has become increasingly common as advertisers attempt to bypass cookie blocks and ad tracking limits by Google and Apple.

So how bad is it?

While there is little transparency around companies running fingerprinting scripts, the practice is widespread online. Many of the websites you visit will recognize your device; research from 2020 found a quarter of the world’s top 10,000 websites running the fingerprint script.

New ways of taking fingerprints are also being created. “Current fingerprinting algorithms are not the upper limit in terms of tracking capabilities,” said Gaston Pugliese, a researcher at Friedrich-Alexander-Universität in Germany. studied the long-term effects of fingerprinting. For example, earlier this year, researchers demonstrated that they could create GPU fingerprint to identify people. Follow everyone on different browsers maybe.



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