Last month, the cryptographer and coder known as Moxie Marlinspike was getting settled on an airplane when his seatmate, a Midwestern-looking man in his sixties, asked for help. He couldn't figure out ...

In the world of Facebook, Instagram and other social media platforms, we typically find someone by their username. On messenger apps, however, we still largely find and save a new contact with a ...

Signal is making changes to enhance users' phone number privacy. Users can now create a Signal-specific username and control who can find them by their phone number. These features are currently being ...