Rascals are always sociable, and the chief sign that a man has any nobility in his character is the little pleasure he takes in others company. Arthur Schopenhauer

Any app with access to Bluetooth could record your conversations with Siri and audio from the iOS keyboard dictation feature when using AirPods or Beats headsets. This would happen without the app requesting microphone access permission and without the app leaving any trace that it was listening to the microphone. SiriSpy - iOS bug allowed apps to eavesdrop on your conversations with Siri