Apple Issues FaceTime Bug Apology, Fix Coming Next Week



It does sound a bit scary but if you think about it all the voice and video data has to be sent to Apples servers then forwarded to everyone in the group facetime. However I do agree there does need to be an iOS fix that does not allow any voice or video to be transmitted unknowingly.
 
The conspiracy theorist in me say that Apple did this on purpose so it could listen in on it's competitors meetings and patent their ideas before they could.