Cross site scripting - Wikipedia, the free encyclopedia

Cross site scripting:

"Cross site scripting (XSS) is a type of computer
security exploit where information
from one context, where it is not trusted, can be inserted into another
context, where it is. From the trusted context, an attack can be launched. Note that although cross site scripting is also
sometimes abbreviated 'CSS', it has nothing to do with the Cascading Style Sheets technology that is more commonly called CSS."