Moreover, even if it's not a material nightmare fishing, the call from another unfamiliar civilization could be aimed at locating you or, without any reason at all and not including human interests, they simply want you dead, like by transmitting taboo memes from their unique electron collection to you.
Only civilizations that have just begun to experiment with unique electron technology, what the old Fifth and Sixth Level Cosmic Civilizations refer to as "newcomers," would contact other civilizations without defenses due to lack of experience, insufficient vigilance, or still holding some beautiful illusions about the universe.
Besides, those civilizations that have mastered the unique electron would only leave their "email" address or private local networks for communication with others after long-term contact, familiarity, and understanding of one another, and their communication frequency would never be what you might call a surfing rhythm.
