A mechanism for notifying a user of an internet browser that a requested web page is undesirable, and for protecting the user from the web page by disabling it. An internet browser detects a load request for a web page and retrieves the Uniform Resource Locator (URL) for the webpage. The internet browser displays the webpage associated with the URL and, upon determination that the URL matches a URL from a list of undesirable URLs, alters the appearance of the webpage and disables the web page from receiving input or taking action.