Which one of the following is not a legitimate form of Cross-Site Scripting?

Which one of the following is not a legitimate form of Cross-Site Scripting?

• Bypass XXS
• DOM XXS
• Stored XXS
• Reflected XXS 

EXPLANATION

There are several types of Cross-site Scripting attacks: stored/persistent XSS, reflected/non-persistent XSS, and DOM-based XSS. You can read more about them in an article titled Types of XSS.

SOURCE

https://www.acunetix.com/websitesecurity/cross-site-scripting/