I'm building some sort of multi tenant system.
If there is entity A from one company with two registered users, I'd like entity A to be visible to both users.

Currently, I've added a reference field to the users and I'm using views with relationships to show entity A to both users.

But I assume, there is a better / saver way of doing thing?

User C could probably just enter node/42 and see entity A - even though user C is working in another company.