First time message warning (to prevent scammers)

There have been successful scams of people posing as someone in your contact list and asking for crypto. This happens by the victim assuming the user is their contact and then convincing them to send over some money. It is very easy to make this mistake because the scammer uses the same profile picture and a very similar username. For instance your friend is yourbestbud, and the scammer is yourbesttbud. That paired with the exact same profile pic can be very misleading.

My suggestion to fix this is to have a warning message the first time a user messages another user. Display something like, "This is the first time you have ever talked with this user! Make sure it is who they say they are."

Yes, I realize anyone should be very careful when chatting online and certainly shouldn't send money to someone without verifying the identity through other means.... but a simple message like this would prevent that lapse in judgement.

No files, tests, or entry points are named in the issue. Begin by locating the messaging interface and how first-time conversations are identified; done means a warning is shown when a user messages another user for the first time, with the behavior verified by the relevant project checks.

Written by the indexing model from the issue text.