‘Signalgate’ continues to rumble on, with even more of the Signal messages that were shared between Trump officials – and, inadvertently, The Atlantic – revealed today. But how exactly did this group chat debacle happen, and what does it say about Signal? We’ve answered all of this and more in our one-stop explainer about the app that’s in the eye of a political storm. With robust privacy credentials, Signal has long set the standard for secure messaging. But in the wake of those revelations that US government officials inadvertently added a journalist to a group chat where confidential military plans were discussed, there are fresh (and mostly unfair) question marks over how reliable the app’s protections really are. Signal’s reputation has made it popular with journalists, politicians and privacy advocates. Used correctly on an Android or iOS device, it can absolutely make your conversations more secure. Even so, it’s not a tool designed for sharing classified information. […]