This is a well known type of scam attempt.
You could get a message on telegram by an unknown user that he is new to crypto and if you are known to it can you please help him in withdrawing his BTC from an exchange ( It would obviously be a fake exchange). Than he would give you his account details and say if you could help he would reward you with some amount of BTC from it. But when you try helping him, and go on the exchange it would ask you to deposit some amount of BTC to make an withdrawal ( Most of the time's it is 0.02 BTC ). The next step you do, and if you help him and send 0.02 BTC for withdrawal, ( The reward you would be getting after helping would surely be more than 0.02 BTC as per the scammer) your funds are just gone to the scammer as the exchange is just a fake one. And boom you are scammed.
Never get into this trap! I have seen many people complaining here being victims of such trick's and I personally have received such weird requests on telegram many times but I was just aware of it so was safe every time and just pissed off the scammer.
Just by a quick look, I found a thread with some proves of such scam attempt, but I am sure one could find more victims here.
Example:
https://bitcointalk.org/index.php?topic=5161096.0Hope this helps in avoiding, more victims overall.
BTW, great efforts OP, keep up the good work !