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You also mentioned these points in your other comments here, but, to me, they look over the top to the point of being paranoic. That's probably because I lack any serious experience in admin side of things, nor of working in environments where such measures would be required.

So I wanted to ask: where such a level of security would be required? And also, what attacks does it defend from?

- If Linux, find the current local privilege escalation bug, get root, and burn it all to the ground.

Followed by get fired and charged.

Oh, you're no fun anymore!

> - Mount $HOME as noexec

/usr/bin/env $your_binary

> If the UNIX variant allows it, jail/contain home for each user session

does that still work? i know the /lib/ld-linux.so /some/binary doesn't work anymore