To help protect Signal users from phishing and social engineering attacks, we’ve introduced additional confirmations and educational messaging in the app to help people better detect fraudulent profiles, especially message requests from scammers posing as Signal.

More changes are on the way.

@signalapp I think honestly the official Signal chat was the slippery slope here.
If it weren't for this chat, you could simply say that there will never be a Signal chat with Signal and every chat with Signal on the app is phishing.
@signalapp there were so many opportunities to implement the functionality of the official Signal chat into the app and not make it look like a chat.
For example there could have been a "new features page" with a banner at the top of the screen that opens it when there is a new feature and can be manually opened via the menu.
And it doesn't even make sense to implement it in a chat of you think about it, because there is no way to respond to the messages.

@farshidhakimy @signalapp

This is excellent design and security advice - I hope signal adapt the app.