US Patent 11301560 Real-time detection and blocking of counterfeit websites

Counterfeit uniform resource locators (URLs) are detected and blocked in real-time by a browser extension in communication with a counterfeit URL detection system. The browser extension receives a URL requested within a browser application. Content from a webpage associated with the received URL is extracted and transmitted to the counterfeit URL detection system, which is configured to analyze the content and return an assessment indicating whether the URL is counterfeit. If the assessment indicates that the URL is counterfeit, the browser extension blocks the browser application from accessing content associated with the URL.