https://www.bleepingcomputer.com/news/apple/sign-in-with-apple-vulnerability-earns-researcher-100-000/ > Remember seeing that slick "Sign in with Apple" button across many websites and apps? It turns out that a vulnerability allowed attackers to log in to sites using any Apple ID. > Only last year, Apple announced this new “privacy tool” to come to every iPhone and apps, in its quest to offer greater security to Apple users. The sign-in feature was introduced to let users log in to services with their Apple ID, as opposed to an email address and password.