What is the Auto-suggested iPhone contact feature that White House has 'blamed' Signal app scandal for

The White House has attributed a recent Signal app scandal to Apple's auto-suggested contact feature, which reportedly caused a significant security breach. The incident involved Atlantic Editor-in-Chief Jeffrey Goldberg being mistakenly added to a Signal group chat containing sensitive discussions about a planned airstrike in Yemen.As detailed by the Guardian, an internal investigation revealed that National Security Adviser Mike Waltz's iPhone mistakenly saved Jeffrey Goldberg's contact information under the name of Trump spokesperson Brian Hughes. This occurred after Hughes forwarded Goldberg's email to Waltz, prompting the iPhone's "contact suggestion update" to incorrectly associate Goldberg's number with Hughes' name. As a result, when Waltz attempted to add Hughes to the Signal group, Goldberg was inadvertently included.The group chat, which involved high-ranking officials, contained classified information about military operations. The breach has raised concerns about the reliability of Apple's contact management features and their implications for national security.The auto-suggested iPhone contact feature is designed to simplify communication by offering contact suggestions based on user behaviour and interactions. It uses Siri intelligence to suggest recent and frequent contacts from supported messaging apps, emails, and other interactions. These suggestions appear in various contexts, such as the Share Sheet when sharing files, photos, or links, and in messaging apps when composing messages.The feature learns from your activity, such as whom you frequently communicate with, and provides quick access to those contacts.