the failure affected such runeto giants as yandex, vk, azon and valtberis, large banks, sberti. alpha which is interesting, messengers, for example, telegram were not affected, users were wondering what happened around hours, there were versions from cyber exercises to a hacker attack, about eight... official comments were published by the ministry of digital development, it said that the problem was related to the dns sec infrastructure, and specialists were working to eliminate it, and after another hour , internet access was restored, that is we were talking about one of the key elements in the structure of the internet. dns is a domain name system, roughly speaking, a constantly updated internet address book that translates human names of sites, say yandex.ru, machine-readable ip address, set numbers that... none of the people can remember, and broken dns sec is an extension that is responsible for the security of the dns, so that no one can replace the domain name instead of the yandex server, redirect the user to the address of the scammers, there in the key signature system and