November 2018
Beginner to intermediate
270 pages
7h 53m
English
Content preview from Bug Bounty Hunting Essentials
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Starbucks race conditions
On May 21st, 2015, a researcher from the Sakuruty group published a bug about a race condition in Starbucks' payment module.
To understand this vulnerability, let me explain what a race condition is. In the computer science, there are shared resources, for example, the memory, data, and environmental variables. So, what happens if process A wants to access the same resource as process B? Well, the first process that accesses it will use it, but not necessarily this resource will be blocked—it could be used at the same time by the other process with unexpected results.
Researchers from Sakurity bought three Starbucks' cards, and registered them in the web application. This application had the feature of being able ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.