How does the state monitor “prohibited” content?

Question

Computer networks

There is a site of free ads. An advertisement was placed for the sale of "electric fishing rods", which, as it turned out, are banned in the Russian Federation.
The Leninsky District Court of the city of Kirov registers the claim and files it with the court, then in the RKN, the RKN turns to the hosting, which blocks the site.
The court's website has the entire process of the case. Everything looks like this:

The prosecutor of the Kumensky district of the Kirov region applied to the court in the interests of an indefinite circle of people of the Russian Federation to recognize the information as prohibited for distribution. In support of the statement, it is indicated that the prosecutor's office of the Kumensky district of the Kirov region, in the course of monitoring Internet resources in order to identify sites that contain materials on the manufacture, sale and use of electric fishing rods prohibited on the territory of the Russian Federation, identified a site { ... }, on the pages of which , according to the certificate of verification dated {Date taken}, materials containing information on the manufacture and use of electric fishing rods are posted.

How does the state machine monitor all this? In this case, the prosecutor's office is mentioned. Do they have special software? How does it all work? Or are they manually looking for the purpose of ticking themselves off?

Answer 1

I don't understand why you are asking this question. How do search engines work? How do search engines know where they sell electric fishing rods and where they sell inflatable women? What prevents the FSB from indexing sites and their content? What prevents them from receiving indexing data from the same Yandex? They took information about the sites - they handed it over to the provider for blocking. Similarly, on the basis of "letter ABVGD-123456 dated March 25 of this year," Yandex was obliged to send an updated index once a week. Again, the provider to block. Etc. I'm not talking about the banal transparency of HTTP and Deep Packet Inspection, along with the substitution of certificates in the Man-in-the-middle style. But if this is already about something, then with what I wrote about at the beginning of the text, what problems do the FSB and other bodies have with indexing this information?