The bug requires you to perform a few actions while the phone is ringing, so if the person on the other end picks up quickly, they might not be affected. Knowledge of how to use the bug is already widespread.
The steps include:
- Tap on a contact on your iPhone to start a FaceTime call with them.
- Swipe up and tap "Add Person."
- Instead of adding a new person, enter your own number and add yourself as another participant in the Group FaceTime call. more
Updates: What we have also found is that if the person presses the Power button from the Lock screen, their video is also sent to the caller — unbeknownst to them. In this situation, the receiver can now hear your own audio, but they do not know they are transmitting their audio and video back to you. From their perspective, all they can see is accept and decline. (Another update: It seems there are other ways of triggering the video feed eavesdrop too.) more
Temporary fix. General smartphone security tips.
