Currently Active Users
 

At 'What's Going On?' you can see 'Currently Active Users' and you can see what threads they're looking at, example: 'Viewing Thread Hi There'

Now I was wondering, suppose this thread 'Hi there' is on a board that certain members don't have access to and are not allowed to even see it, what will they see?
Will they see the name of this thread? Or will they something completely different?