1. A system, comprising: a memory device storing user account information; and one or more processors in communication with the memory device and operable to: receive a request for a webpage from a user device; generate or retrieve the webpage including a document object model (DOM) inspector and/or a JavaScript (JS) namespace inspector; communicate the webpage with the DOM inspector and/or the JS namespace inspector to the user device; and detect an anomalous DOM element and/or anomalous JS namespace element in a webpage rendered.