DraftKings users are saying their accounts are hacked & stealing large sums from their bank accounts. Many of those folks claim 2FA was enabled so while it's possible this hack was credential stuffing + 2FA code stealing or SIM Swap, it could also mean DraftKings themselves are dealing with compromise.
https://www.actionnetwork.com/legal-online-sports-betting/draftkings-users-hacked-money-in-account-cashed-out