Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » X »

XSS

An abbreviation of cross-site scripting. XSS is a security breach that takes advantage of dynamically generated Web pages. In an XSS attack, a Web application is sent with a script that activates when it is read by an unsuspecting user��s browser or by an application that has not protected itself against cross-site scripting. Because dynamic Web sites rely on user input, a malicious user can input malicious script into the page by hiding it within legitimate requests. Common exploitations include search engine boxes, online forums and public-accessed blogs. Once XSS has been launched, the attacker can change user settings, hijack accounts, poison cookies with malicious code, expose SSL connections, access restricted sites and even launch false advertisements. The simplest way to avoid XSS is to add code to a Web application that causes the dynamic input to ignore certain command tags.

Scripting tags that take advantage of XSS include <SCRIPT>, <OBJECT>, <APPLET>, <EMBED> and <FORM>. Common languages used for XSS include JavaScript, VBScript, HTML, Perl, C++, ActiveX and Flash.

Cross-site scripting also is referred to as malicious tagging and sometimes abbreviated as CSS, though CSS is more commonly used as an abbreviation for cascading style sheets.







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
What You Don't Read Can Hurt You

Does this sound familiar? An online service promises to help your small business cut costs, increase productivity, make your coffee and walk your... Read More »

Who's Moving Ahead in Cloud Computing?

The future remains, well, cloudy. But either way: Amazon, look out. Microsoft is gaining fast. Read More »

We Can't Give Up on Privacy!

Even new and emerging technologies that can make our lives easier, safer and healthier can jeopardize our privacy. Read More »

QUICK REFERENCE
Webopedia Polls

The trend for the past two years has been for shoppers to spend more online during the holiday season. How do you typically shop for holiday... Read More »

How to Create a Desktop Shortcut to a Website

This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Read More »

Flash Data Storage Vendor Trends

Although it is almost impossible to keep up with the pace of ongoing product releases, here are three recent highlights in the flash data storage... Read More »