Examples are
- Deep defense. Consider everything hostile. No unencrypted traffic over the network. Spectre attacks matter a lot because you cannot trust other users on the host.
- Tough on the outside, soft on the inside (also M&M security). Try hard to keep bad guys of your intranet but trust your internal users. Spectre attacks don't matter because you trust the other users on the host.
I.e. in a hospital medical data has to be immeadiatly available to all medical staff to react quickly. However, if medial data leaks (i.e. about a celebrity or in large scale) the bad guy can be caught by looking at the access logs to the data.