Data-collecting devices can never be trusted, as the FaceTime bug has shown. From phones to doorbells, it’s the start of a civil-liberties nightmareIt has been a terrible week for Apple. Not only did the tech company report its first decline in revenues and profits in more than a decade, but it was embroiled in an embarrassing privacy scandal. A much-discussed bug in its FaceTime app meant that, in certain circumstances, you could turn someone’s iPhone into an all-seeing, all-hearing spying device