Because I love how seriously the DoD takes newly invented terms, we have:
"The Integrated Survivability Onion"
https://cogecog.com/the-threat-onion/
1. Don't be seen.
2. Don't be acquired
3. Don't be hit
4. Don't be penetrated
5. Don't be killed
It's actually not a bad mental model training aid for teaching people who might find themselves in an active combat environment.
Works just as well anywhere, really.
The acquired concept is new to me, is this an established term?
I feel like "Don't be captured" should be included, perhaps between 4 and 5. In cybersecurity this would be applicable to ransomware.