I have an iPhone SE (2nd gen) and an iPhone SE (3rd gen) on which both the Telegram app and the Norton 360 app are installed. The Norton 360 app had been installed 24-48 hours when I got the notification (while using Telegram and all other apps were closed) on the 2nd gen iPhone. To this point, I have not received a similar notice on the 3rd gen iPhone. The Norton 360 app was installed while a Norton agent was on the phone with me, walking me through the setup.
I have used the Telegram app daily (a minimum of 8 hours a day, 7 days a week) for at least 3 years, and I belong to several channels and groups that I interact with the other members of the groups/chats. I am owner of several groups, both public and private. I have never had reason to believe that anyone has had an unsafe experience when using Telegram. I posted the attached 3 screenshots in several of my groups to see if anyone else had received an "Unsafe" notice about Telegram. So far, the response has been "No."
So I would like for Norton to share with me and my fellow Telegram users why Norton recommends that we not use Telegram. If it is truly unsafe, I need to alert my online friends, but if there is no evidence pointing to a possible security risk by using the app, I don't believe anyone will take this one notification seriously.