Cross-site scripting (XSS)

An attack where the adversary/attacker is able to inject code (script) into a website in a manner not intended by the developer.

Guide to Cybersecurity as Risk Management: The Role of Elected Officials Guide to Cybersecurity as Risk Management, Governing Institute, CGI, https://www.cgi.com/sites/default/files/2019-03/guide_to_cybersecurity_as_risk_management_the_role_of_elected_officials_0.pdf