Cookies and browser fingerprints

Today’s Internet users are familiar with the word “Cookies”.

Cookies are data that websites use to identify users and store on local terminals.

By “local terminal”, we generally mean the browser we use. The browser stores Cookies, so when using the browser to visit the website, the website will track through the information of Cookies to determine which user is logging in.

After Cookies, browser fingerprints have emerged as another way for websites to track users.

Websites collect digital fingerprints from browsers to uniquely identify specific computers. Websites can also access user data in this way.

Even if the user has deleted the access to Cookies, the browser fingerprint data can still be used as a way for the website to keep track of the user.

How browser fingerprints work

The website obtains browser fingerprint data through JavaScript code, including UserAgent, time zone, screen size, resolution, font, plug-in and other information, and creates a unique digital signature according to these data.

(test site: browserleaks.com/javascript)

Some sites will also go to HTML5 Canvas and do image processing, and since gpus on different computers render images in slightly different ways, they can get device-specific details.

(Testing website: browserleaks.com/canvas)

Giant image fingerprint browser, can modify UA, TimeZone, FontSize and other fingerprint information, but also can realize different browser identity, simulate the effect of logging on multiple computers.

Practical use of browser fingerprints

If you use the same browser environment and register multiple accounts on the same website in a few minutes, even if you clear all the Cookies and change different IP addresses before registering each time, the website can still identify the operation on the same computer through the browser fingerprint information. For the website, This is most likely important information about a fake account, which will be verified or blocked immediately.

How the Giant Elephant fingerprint browser works

Giant image fingerprint browser based on Chromium, in addition to setting the proxy IP, but also modify the basic fingerprint information UA, time zone, language, GEO, resolution, font and so on.

It is worth noting that it can modify Canvas, WebGL, Audio and other hardware fingerprint information through the adjustment of the underlying browser.