It's basically an intractable problem: If you have anything that is worth stealing, people will use any method they can to steal it.

If you fully decentralize all power as much as possible, they will simply march an army in and grab it - because you can't raise enough power to oppose them.

If you unite to "provide for the common defense" then they will parasitize that system which you have constructed.

In this domain, "no system is safe" is a harsh reality.