Level 3/4 describes a situation where a known threat is either imminent or starting to affect the global network.

It is threatened by habitat destruction, but apart from that, there are no other known threats.

He notes a judge now only gets protection when there is a known threat.

I am concerned by this known threat, not a possible one next year.

At least the Empire was a known threat.

"That planet's nowhere near Klingon space, or any other known threat."

Given that mankind returned to a subterranean state after a global nuclear war, there is no known threat in this silent area.

It is threatened by habitat loss, the only known natural threat to it.

Looking for educational materials for your company's employees, or technical information about known threats?

The only known threats they face are from predators and very occasional poaching.