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.
Its happen to me too. Scammer trying to approach me and want me to transfer ethereum to their wallet. I am always ignoring them and not replying their message because i know, good group admin wont give a first pm. Beside on telegram, i am always receiving suspicious link on my email and trying give me a free token and coin, better never click on that link