Though I do not always agree with Boonejohn97 When it come to security issues, this time I have to. A little bit of background check has to be done, it's a matter of common sense. The problem is how to make that check, what should be the parameters to allow people on Asgardia.
Now, speaking about terrorism, thymeless is right, they rely on media to get attention and spread fear and to glorify their martyrs, instead their names should be kept secret and their attacks reported in the less sensationalized way possible, for example.
But how do we stop terrorism, Leonardo asks. Well, it's not an easy question to answer, USA, Russia, Europe and China fucked up the middle east with decades of puppet governments, financing extremists groups and things like that.
Now, the feelings of hate towards the western society are very hard to be erased, the first steps should be giving back those countries to their own populations, helping them with money to rebuild hospitals, schools and infrastructures.
But before doing all of that, the people and the nations that are financing the terrorists should be stopped, unfortunately terrorism is not just about some dudes willing to blow themselves up becuase of their religion, it's a business thing, and countries too big and powerful are involved in that. The only way to stop them is to expose the truth, with names, transactions in other words we need actual proofs, in order to involve the public opinion, making impossible for the responsibles to continue with their affairs.
How can we achieve that goal? Hackers and spies, but that would be literally the end of the foreign policies of Asgardia, if someone link them to us. Stopping terrorism is like walking on a mine field, I guess.