Actually in myetherwallet scam, I am one of the stupid bitcoiner that being scam. They sent an email as the same as the email of campaign manager at bounty asking for my info like KYC and asking my private keys.I thought it was legit because campaign manager was always sent an email update to me. So next day I found out that my coin was stole. So I can say that scam is the biggest crime here in cryptocurrency.
Sorry about that unfortunate incident. In the future, even Donald Trump is the founder of a project, and he needed your Private keys, just know that it's finished should you give him. Private Keys are a serious issue,
Yes, i agree that scam is the biggest crime in this market, millions of money are being scammed every year and if we continue to be like this them its hard for us to grow consistently. Your situation is normal for the scammers but its your fault to give your private keys, legit campaign will never ask for this one so keep this in your mind.