Of course there's a backdoor for targeted surveillance - no phones stand up to that, especially if you can devote a few man-hours for hands-on manipulation of t

Of course there's a backdoor for targeted surveillance - no phones stand up to that, especially if you can devote a few man-hours for hands-on manipulation of the device. (easiest would probably still just be a traditional small mic+tap on the touch and screen interface. Or room/car surveillance...). Signal might be adequately secure to thwart no-cost/zero-per-user investment, drag-net surveillance, and at the same time not secure enough to avoid targeted surveillance.