Even if they knew we were here I don’t think they’d be able to do anything about it. People do not appreciate how far away they’d be. Even the closest star is 4.5 light years away. No way could they traverse that. Or would they. And it’s very unlikely that they’d be that close.
And it’s very unlikely that they’d be that close.
Are you sure?
Three unexplained extra-solar objects have already passed through out solar system ...
Do you really believe that if a civilization did exist out there that they had a 100,000 year lead over us on the technology curve that they would be worried about a mere 4.5 light years?