Speculation of something more sordid grew louder on Nov. 14, when Changpeng “CZ” Zhao, the CEO of Binance, the world’s largest crypto exchange by volume, referenced 3Commas in a tweet: “We [sic] seen at least 3 cases of users who shared their API key with 3rd party platforms (Skyrex and 3commas), and seen unexpected trading on their accounts. If you used such a platform before, I highly recommend you to delete your API keys just to be safe.”