How to prevent IP through Proxy?

Question

VPN

Connection scheme GhostVPN
Proxy will be thrown on top
It is curious that some sites manage to determine the VPN's IP through a proxy. I wonder how
Although if you take 2ip.ru for example, and check the IP before connecting the proxy and after connecting it - the IP changes stably

Answer 1

This is called Fingerprint "fingerprint", in this case (browser fingerprint).
You can learn a little about this in this article:
https://geektimes.ru/post/284604/
General methods for obtaining information are available in this article (not in-depth information):
https://forumpenza.ru/content.php?r= 84-Informatsiy...
On these resources you can check:

• https://panopticlick.eff.org/
  
• https://do-know.com/privacy-test.html
  
• https://browserleaks.com/