I was thinking about this while playing the game.

It has something to do with hidden wormholes that are located in gray space that can lead to certain parts of nation space, without the wormhole icon located on the map. A player will not notice the wormhole in space until they are very close to it(500 and below). Hidden wormholes would be located in unmonitored parts of nation space. Along with hidden bases that's not associated with the nation as well. So hidden wormholes, and hidden stations would have a special type of map where you can only see them if you're docked at a hidden station(as they are sometimes normally hostile towards player nationalists).

So it would be like players sneaking into another nation space in which I don't know if this is a good idea or not. As long as the player from another nation doesn't jump outside of unmonitored space especially if they have a negative rep, they should be fine.

Well, since there's no visual cues for Wormholes other than a HUD indicator. You'd be trying to find a 1000m wide piece of invisible space within an astronomically large piece of invisible space.

Vendetta alpha did this well by using other objects as cues for where the hidden wormholes were.

Ideally, I would hope the hidden wormholes would be transient, if they stay in the same place, they won't be hidden for long, and the mystery goes out of it.