I got bored and made a Substack for sports betting stuff. First post is about how lame the security is for some of these sportsbooks' websites:
https://paulssports.substack.com/p/online-sportsbooks-dont-take-security
Online sportsbooks don't take security seriously
ESPN Bet, DraftKings and FanDuel come to mind as some of the more popular and high-profile sportsbooks in the United States, as companies that don’t take customer security and safety seriously.
Paul Tenny