Review Detail of Frozentech in Restart:Untalented Man

I dont get it. Didnt he increase the security in the city because of all the spies? He even made sure the mana cystal mine is tighly monitored. But in just a couple of chapters somebody already manage to smuggy somthing out? And all he needed to do is to hide it in his boots? And what with this blackout agant still being there. Is the country integence that bad?