Today i received a message from (relita9302) a unrated account who said that i could be a tester if i sent a key to another codeforces account (crowdforces), thing that i did, big mistake, i found out that when you sent that key you get some Near reward or something, i'm don't know about Crypto.
Clearly is a scam and probably more fake accounts will appear, so if you receive a similar message from a stranger, please be careful to NOT answer and report.
PD: English is not my primary language, sorry if i made some mistakes