Scammers were and will always be. There are a lot of them in the crypto-currency market, because this market is very risky and it is not controlled by anyone. Therefore, it is very easy to carry out fraudulent actions and go unpunished.
Bitcoin is the most secure crypto coin and it takes care of users privacy and data but if it is possible only if user also take care of its privacy that is password and other information. Besides all these things we see some hackers as well as scammers activities which is due sharp hackers and even sharp hackers can attack on weak chains here is the crypto market.
Furthermore, about scammers there are more scammers in fiat currency than the crypto currency so this thing is not exist only in the crypto market but have approach to other sources as well.