Earlier quoted context omitted.
According to the Chinese science fiction author Liu Cixin the Fermi paradox is solved by the certainty that if an alien civilization announces its presence to the rest of the universe, one of the gazillions of other advanced alien civilizations is sure to destroy it. So they keep quiet.
The books and all are nice but the Dark Forest Theory doesn't hold agains much scrutiny. Among other reasons because if that were true we would be already dead. https://www.youtube.com/watch?v=zmCTmgavkrQ
The theory has catchy name, but even the earth's nature disproves it.