Yes, I Smart Group with no criteria means all machines. This is current behavior - can't say 'expected' as I don't know how many people have done it. I don't think it's a huge risk, as most people will see how many machines are in the smart group as the last step of creating it. At least I do!
I'd like to see a 'computer count' number on the Scope settings page so I have an idea how many machines I'm targeting. Right now, I disable the policy and then view log to see how many are there to make sure I didn't screw up the target/limitation/exclusion...
The Feature Request for this is here: https://jamfnation.jamfsoftware.com/featureRequest.html?id=1659
Please go and vote this up AND post your thoughts on the thread. As you can see the FR is more than 2 years old now and JAMF has done nothing about it (though its "Under Review") They need pressure from all Casper Suite customers to change this dangerous default behavior. Because no-one is immune to this pitfall unless you don't use Smart Groups at all, or don't create policies to deploy to your managed systems - and you're highly unlikely to find anyone in that boat.
Although its actually mentioned in the full Casper Suite admin guide documentation (pg 256, Step 6, item e) I don't feel its called out prominently enough, given how serious this could be under the wrong circumstances.
I actually don't know what JAMF's waiting for to address this. I feel this should have been changed by now.
I'd like to see a 'computer count' number on the Scope settings page so I have an idea how many machines I'm targeting. Right now, I disable the policy and then view log to see how many are there to make sure I didn't screw up the target/limitation/exclusion...
That would be swell. At least if you had a quick glance you could see that the policy you intend for 20 objects isn't scoped for 1200 quickly. That would be a nice touch.
Yep this is probably the worst bug/feature in Casper at the moment from the potential to completely destroy your environment through no real fault of your own.