Tonight my guild was playing on Sanctum of Rall borderlands when two people from the opposing team kept forcing themselves into our squad. Our squad was private and set to not allow anyone to join. We dropped squad, had someone else start squad privately, with the same closed settings, and they forced themselves in again. This happened multiple times, to the point we had to drop squad completely for a bit. Never at any point did the commander get asked if the people could join, they just showed up in closed squad without being invited. I reported one of them under the spam option, we really need a text box in game to explain why we're reporting someone.