Ahhhh, dependencies. You're right. This is more involved than I originally thought. Here, does the following look like an accurate summary of the situation? (For optional row/cols, "Optional (yes)" with a value of "secure" means "if the feature is optional, it's secure for users who have it enabled.")
If both notification and confirmation are optional and enabled, it is secure.
And I don't think WhatsApp is secure for anyone with its permanently disabled confirmation. Maybe it prevents mass surveillance, but it is still vulnerable to targeted attack. Surely it may cost facebook reputation and the attack will be detected in the end, but it is still possible.
Ahhhh, dependencies. You're right. This is more involved than I originally thought. Here, does the following look like an accurate summary of the situation? (For optional row/cols, "Optional (yes)" with a value of "secure" means "if the feature is optional, it's secure for users who have it enabled.")