Then you'll need to keep a towel draped over your laptop at all times. Better check your builit-in microphone too. Someone might have hacked it and they're listening in. Every time you're within range of it, you'll want to be sure the microphone is deactivated or else place a piece of duct tape over it to ensure your conversations are secure. Probably a one in a billion chance, but you can never be to paranoid.