When the scammer tells you...
1) to give him your wallet id and password
2) to use a blockchain wallet he created for you.
3) to fund your wallet after you changed your password
4) that you will get 5000% back in a day (high percentual return in a short period of time)
Any more??? let's discuss!!!!
P.S. by the way, I have found a very good platform called gebepay and I have used it a couple of times and found it pretty useful and safe to buy products or services with my ETH, anyway have a look!
point number two an exception if that's was an official wallet and if you ask someone for link maybe they will give you an official link, well maybe just be more diligent with the link someone give though. Overal if something too good to be true, then that's most likely a scam.