December 2008
Intermediate to advanced
336 pages
6h 58m
English
Content preview from Securing PHP Web Applications
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10 Cross-Site Scripting
In this chapter, we cover a special type of injection attack called cross-site scripting, or XSS. This is a special type of code injection attack (remember those from Chapter 5, “Input Validation”?) that doesn’t affect your system as much as it affects your users. Our example guestbook is exactly the type of site that is vulnerable to these attacks.
What Is XSS?
XSS is just a special case of code injection. In this type of attack, the malicious user embeds HTML or other client-side script into your Web site. The attack looks like it is coming from your Web site, which the user trusts. This enables the attacker to bypass a lot of the client’s security, gain sensitive information from the ...
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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.
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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.