Cross-site scripting(XSS) is a type of computer security vulnerability tipically found in Web application. XSS enables attackers to inject client-side scripts into Web pages viewed by other users. Livescript is the predecessor of JavaScript, some browsers still support livescript pseudo-protocol. This rule detects 'livescript:' in HTTP request. This rule supports to defend the A3: Injection of OWASP Top 10 - 2021. Other reference:None