A large-scale crypto scam has happened this very week, with news of 'a free game' that was on gaming platform steam having been used to distribute crypto mining malware to very many users. The game is known as Abstractism, it is obfuscating a crypto miner.
Read the details in the article of Coinidol dot com, the world blockchain news outlet:
https://coinidol.com/undercover-hackers-are-using-steam-to-illegally-mine-crypto/