I get messages everyday in Telegram.
Most of them approached me as investors, group admins or affiliates.
One way to detect them is that they will approach us first. And they always start with 'Hey User'.
Real investors or admins dont simply approach other people until we ask for their help first.
Remember. Never will project administrators write private messages to you in order to offer more favorable terms of cooperation. Throw at once a complaint to such people.