Prologue Account Take-Over (ATO). You've probably not given this too much thought, unless you've had your account jacked. Whether it was someone stealing your Twitter account, or your bank account, or God-forbid your Facebook - you know the ramifications are serious. But how do you identify it, prevent it, detect and respond to it, and maybe even recover from it... at scale? Rafal's guest, Ari Jacoby of Deduce has some ideas.  Ari talks about the broader ATO problem, and suggests some of the reasons it's gotten this bad (...how bad is it?...) and what companies that are not in the Fortune 250 can do to protect themselves - and you. Guest Ari Jacoby Deduce: https://www.deduce.com/  LinkedIn: https://www.linkedin.com/in/arijacoby/  Twitter: https://twitter.com/arijacoby