Hack my 'Personal Hotspot' on my iPhone 4?

I just connected my laptop up to my 'personal hotspot' on my iPhone. I was using the wireless for a while and then went away. When I came back I noticed that it said: 2 connections. I'm the only person who is using the wireless. Is there any way that somebody else could hack it? How can I stop them?

Yes look the points http://forums.macrumors.com/archive/index.php/t-1119597.html

  • Who is connected in my personal hotspot in iphone? I need to know who is connected, because i have 2 connected now while i only connect this to my ipad.
  • What additional cost may occur from making my iphone a personal hotspot? I turned on the personal hotspot option in settings on my iphone but it says additional costs may occur. Does that mean it costs money for me to connect my other devices or just if i exceed the amount of 3g i'm paying for.
  • Using the Personal Hotspot on my iPhone? The Wi-Fi on my Laptop doesn't work, so I can't connect to the internet. I'm using the Personal Hotspot on my iPhone to connect to the internet. My iPhone is connected to my homes Wi-Fi. I'm curious, when my Laptop is connected to the Personal Hotspot, is it accessing my iPhones internet, or is it running off my home internet?
  • Personal Hotspot on iPhone 4S? At the moment we're waiting for sky broadband to be installed sometime Tuesday next week, and need to use Wi-Fi on our other products. For some reason, my iPhone 4S won't show the personal hotspot like other iPhones do. I'm on the O2-UK network on pay as you go.