3 How the Internet Works

Before you jump into hunting for bugs, let’s take some time to understand how the internet works. Finding web vulnerabilities is all about exploiting weaknesses in this technology, so all good hackers should have a solid understanding of it. If you’re already familiar with these processes, feel free to skip ahead to my discussion of the internet’s security controls.

The following question provides a good starting place: what happens when you enter www.google.com in your browser? In other words, how does your browser know how to go from a domain name, like google.com, to the web page you’re looking for? Let’s find ...

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