That&#x27;s similar to the issued the IT administration of the german Bundestag faced when parts of their network got owned.<p>I think not seeing it as &quot;one network&quot; but instead of seeing it as an internet in which some instances offer services for other instances helps. The &quot;one&quot; network is prone to fail because in such an environment you can&#x27;t fit all parties under one hat. (And perimeter security is dead, anyway.)