XSS attack

Question

what is Xss attack and what this attack can do?

Answer 1

XSS (Cross-site scripting) is a type of computer security vulnerability typically found in Web applications. XSS enables attackers to inject client-side script into Web pages viewed by other users.

Answer 2

might help to understand it better with an example

awesomest case of XSS attack i heard of explained here:

https://en.m.wikipedia.org/wiki/Samy_(computer_worm)

Answer 3

Congratulations, Igor! You know how to use Wikipedia!