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Thank you. Thanks for coming. I know itamp;#39;s an early start. Good morning, and welcome to Smashing the state machine: the true potential of web race conditions. Have you ever seen a vulnerability that made absolutely no sense? Something that didnamp;#39;t just leave you wondering why would anyone code that, but asking how is it even possible to write code that has that effect. Maybe you even got hold of the code and stared at it for hours and it still made no sense. And perhaps if you showed it to somebody else, theyamp;#39;d say something like, amp;quot;Oh, it must be a race condition.amp;quot; In this session, Iamp;#39;m going to share with you tools and techniques to discover and exploit that kind of race condition. Letamp;#39;s start by surveying what we do understand, what race conditions have you seen or exploited in the wild. Maybe things like reusing a single use voucher multiple times or bypassing some kind of rate limit or reviewing a sin