What determines the permissions for a diskimage?
Like when an app is distributed on a .dmg and you just mount it and then drag n' drop to install.
Cause when I get info on this app (while it is on the distribution .dmg and then after I copy it to /Applications) it says my username (Me) Read & Write, Everyone (no access).
So, it would seem that other users on the system can't even run the app...
https://spideroak.com/download/