Why does one website ask permission to install a certificate?

Question

Android

When accessing one news website through Opera/Chrome browsers, this pop-up window appears asking to add a certificate from a certain

cn=FindMyMobile

spoiler

This was not the case for others. It does not appear in Firefox.
What does this mean?

Answer 1

I will upset you. But the FindMyPhone certificate is already on your phone.
It is also written in black in English.
The Opera application requested a certificate. Select a certificate that will allow the application to identify itself to the server now and in the future.
The certificate itself most likely came to you with the installation of the program) FindMyPhone)

Answer 2

This usually happens to me when I stumble upon a blocked resource - a stupid pr is trying to redirect traffic to its stub, its name does not match the site :) Save the certificate and see who its publisher is, what is written in it.
It is not necessary to bet - there is a considerable assumption that you are being blown.