Account security means making sure your users are only ones who can access their accounts. Account takeovers happen for a variety of reasons – password re-use, compromised computers, guessable passwords, and more. This talk gives you concepts and concrete skills that will help you identify and prevent account takeovers and limit the damage. It’s inspired by practices in use at GitHub, Google, and the Python Package Index. Slides can be found at: https://speakerdeck.com/pycon2019 and …