How does the site daidostup.ru make money

Question

In contact with

The website daidostup.ru allows you to access sites such as vkontakte, classmates in case access to them is blocked.

As you know, free cheese is only in a mousetrap. Hence the conclusions: somehow they profit from you. I didn't see any ads there.

Options:

1. they replace contact advertising with their own
2. they somehow illegally use passwords \ cookies \ personal data of users

Answer 1

Well, on the main contact their advertising is substituted. In general - account hijacking, after such a "proxy" is not excluded.

Answer 2

Typically, such sites set a daily limit in megabytes, then - for a fee. Perhaps when these are untwisted, they will do the same.
If the audience is large, there is a lot of material for targeted advertising and spam.