[ct1]

I may elaborate, in the hope it is useful.

You should never submit any work to a conference or journal you do not know and follow beforehand.

To be more explicit: a good rule of thumb is that if you are not familiar with the publications of at least some of the committee or, if you were asked to suggest reviewers for you research out of the scientific committee members, you'd be hard pressed to name a few, you should not submit anything.

Your students should know that. If none explained something similar to the above, then you should have.

As you get older, I find I only follow 1-2 quality publications. I often get invited to dubious / shady conferences and I just hit the spam button. All of my peers do the same.

[jrochkind1]

Why shouldn't you submit to such a conference? Because you don't know if it's legit or not?

I don't think the students care if it's legit or not. They care about getting papers published so they can graduate. And apparently their schools don't care if the conferences are legit or not either. So everyone is happy, we all win!

[fat0wl]

the only actual beneficiary i can think of is the people charging students to publish without even having to deal with the overhead of hiring someone to read the damn thing