Through which installed programs can sites track IP?

Question

Anonymity

Hello, I have a task. You need to register on one service from a Moscow IP address, and at the beginning of this video - https://www.youtube.com/watch?v=IbcmDGVPaac&t=120s it says that using Java installed on the visitor's computer, MAC can be tracked network card address. That is, if I change the IP in the browser, then the service will still be able to find out my real IP using Java.
QUESTION: what other similar programs exist, like Java, that need to be removed so that I don't get burned?
PS Please do not tease.

Answer 1

God, another school ...
Have you heard anything about the "browser fingerprint"? No, of course, since you believe the "video tips" from the pipe - read the "niasilil" documentation?
Google what "browser identification" is and why replacing and replacing IP, MAC and even the serial number of the screw will not work if you ignore it :DDD

Answer 2

Do not install anything from left resources
Never
Check the site address from where and what is being downloaded
Your real IP can be found out in a dozen ways (even when connected via vpn, tor or proxy)
To fully hide, you need to know a lot of nuances of the web
Do not watch such videos

Answer 3

through the router's webmord ;)