Hi, Im new here. I bought an imac in december and im learning how to handle this. Few days ago i was on the internet and when i shut a window i saw my webcam was switched on. I saw my image in the deskto. As i shut this app down imediatelly, i didn t see what the app was it. I imagine it was phototobooth. Now im worried about being invaded. I scanned my computer with three anti virus. There aren t any trojans or other malwares in it. But, i wanna know whether its possible someone have invaded my computer by my IP number. If yes, the invasor could open apps in my desktop? Im really paranoid. Help me. Thanks.