To be precise, there are two functions, both defaulting on for Siri, each requiring manual, per-application, opt out: 1. "Learn from this app", uses NSUserActi

To be precise, there are two functions, both defaulting on for Siri, each requiring manual, per-application, opt out: 1. "Learn from this app", uses NSUserActivity API: https://developer.apple.com/library/archive/documentation/General/Conceptual/AppSearch/Activities.html https://developer.apple.com/library/archive/documentation/Ge... 2. "Show content in Search", uses Apple Spotlight to index all app data. For an E2EE messenger, that is not only notifications, but all text/image/audio data in message history. As stated at the top of this subthread, these menu options preceded Apple Intelligence by several years. Implementation would have changed over time.