The biggest user of bandwidth in our office is youtube. It's not even close. People use it for music, I hope. But it's not my problem so I haven't looked into i

The biggest user of bandwidth in our office is youtube. It's not even close. People use it for music, I hope. But it's not my problem so I haven't looked into it. When I worked in a bank it was fairly common for contractors to have a non-bank laptop with 3G/4G internet on it that never touched the bank network. I don't know the fine print but it seemed like a security issue to me.