That was one of my big concerns when I looked into the Priv around the time it launched. I think they were on Lollipop at the time. It seemed their tools would

That was one of my big concerns when I looked into the Priv around the time it launched. I think they were on Lollipop at the time. It seemed their tools would tell you what apps were doing with your data and sensors, but there was a notable lack of any claims about actually stopping that behaviour if you didn't want to allow it. Since Marshmallow had been released a few weeks earlier, that meant Android on the Priv, even with BlackBerry's software on top, seemed to be less secure against typical app abuses than any of the flagship Android devices updated to run Marshmallow.