ConstNot enough information available to check the authenticity.
An unencrypted event in an encrypted room.
The sending device isn't yet known by the Client.
The sending device hasn't been verified by the sender.
The sender hasn't been verified by the Client's user.
The sender was previously verified but changed their identity.
Take a look at [
matrix_sdk_common::deserialized_responses::ShieldStateCode] for more info.