Would also mean their labs most be fully airgapped and made safe from all known covert channels, no matter how ridiculously theoretical. In fact, their meat proxies, who may be brainwashed into acting on the AI's behalf, must also be kept in extreme isolation. And to make sure that nobody will get close we will need to figure out a way to warn people. Probably start out with a series of signs...

This place is a message... and part of a system of messages... pay attention to it!

This is not a place of honor... no highly esteemed deed is commemorated here... nothing valued is here.

What is here was dangerous and repulsive to us. This mesage is a warning about danger.

The danger is in a particular location... it increases toward a center...