Apple change causes scramble among private messaging app makers

A change Apple is making to improve privacy in an upcoming version of its iPhone operating system has alarmed an unlikely group of software makers: developers of privacy-focused encrypted messaging apps. They warn the change, which is already available in public test versions of iOS 13, could end up undermining the privacy goals that prompted it in the first place. Relying on Apple is about as smart a business strategy as trusting a scorpion to carry you across the river.