Detects and stops nefarious URL redirections, allows redirects on trusted websites, and logs the actions
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// ==UserScript==
// @name Stop Nefarious Redirects
// @namespace http://tampermonkey.net/
// @version 2.72
// @description Detects and stops nefarious URL redirections, allows redirects on trusted websites, and logs the actions
// @match http://*/*
// @match https://*/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// List of trusted websites or domains where redirects are allowed
const trustedWebsites = [
'500px.com',
'adobe.com',
'amazon.com',
'apple.com',
'arstechnica.com',
'artstation.com',
'asana.com',
'atlassian.com',
'axios.com',
'battle.net',
'bbc.com',
'behance.net',
'bestbuy.com',
'blogger.com',
'booking.com',
'buzzfeed.com',
'canva.com',
'cnn.com',
'codecademy.com',
'constantcontact.com',
'coursera.org',
'deviantart.com',
'discord.com',
'docusign.com',
'dribbble.com',
'dropbox.com',
'duolingo.com',
'ebay.com',
'edx.org',
'engadget.com',
'epicgames.com',
'etsy.com',
'eurogamer.net',
'facebook.com',
'figma.com',
'flickr.com',
'forbes.com',
'framer.com',
'freecodecamp.org',
'gamespot.com',
'gettyimages.com',
'github.com',
'gizmodo.com',
'gog.com',
'hubspot.com',
'huffpost.com',
'humblebundle.com',
'ign.com',
'ikea.com',
'imdb.com',
'imgur.com',
'instagram.com',
'intuit.com',
'invisionapp.com',
'itch.io',
'khanacademy.org',
'kotaku.com',
'lifehacker.com',
'linkedin.com',
'lynda.com',
'mailchimp.com',
'mashable.com',
'masterclass.com',
'medium.com',
'microsoft.com',
'mozilla.org',
'msn.com',
'netflix.com',
'nytimes.com',
'origin.com',
'paypal.com',
'pcgamer.com',
'pexels.com',
'pinterest.com',
'pixabay.com',
'pluralsight.com',
'polygon.com',
'quora.com',
'reddit.com',
'salesforce.com',
'samsung.com',
'shutterstock.com',
'sketch.com',
'skillshare.com',
'skype.com',
'slack.com',
'soundcloud.com',
'spotify.com',
'stackoverflow.com',
'steamcommunity.com',
'surveymonkey.com',
'target.com',
'techcrunch.com',
'theguardian.com',
'theverge.com',
'tiktok.com',
'trello.com',
'tripadvisor.com',
'tumblr.com',
'twitch.tv',
'twitter.com',
'udemy.com',
'unsplash.com',
'Vice.com',
'vimeo.com',
'vk.com',
'vox.com',
'walmart.com',
'washingtonpost.com',
'whatsapp.com',
'wikimedia.org',
'wikipedia.org',
'wired.com',
'wordpress.com',
'wsj.com',
'yahoo.com',
'yelp.com',
'youtube.com',
'zapier.com',
'zendesk.com',
'zeplin.io',
'zoom.us',
'google.com'
// Add more trusted websites or domains here
];
// Store the current URL
let currentUrl = window.location.href;
// Store the previous URL
let previousUrl = currentUrl;
// Flag to track if the script has been activated
let scriptActivated = false;
// Function to log actions
function logAction(message) {
console.log(message);
}
// Function to check if a website is trusted
function isTrustedWebsite(url) {
return trustedWebsites.some(website => url.endsWith(website));
}
// Function to handle redirection
function handleRedirect(event) {
// Check if the URL has changed
if (window.location.href !== currentUrl && !scriptActivated) {
// Check if the current website is trusted
if (isTrustedWebsite(window.location.href)) {
// Allow the redirect on trusted websites
previousUrl = currentUrl;
currentUrl = window.location.href;
return;
}
// Set the script activation flag
scriptActivated = true;
// Stop the redirection
event.preventDefault();
event.stopPropagation();
// Push the previous URL into the browser history
window.history.pushState(null, null, previousUrl);
// Replace the current URL with the previous URL
window.history.replaceState(null, null, previousUrl);
// Log the action
logAction('Nefarious redirection stopped. Previous URL loaded.');
}
}
// Function to handle forward navigation
function handleForwardNavigation() {
// Store the current URL before navigation
previousUrl = currentUrl;
currentUrl = window.location.href;
}
// Function to handle back button navigation
function handleBackNavigation(event) {
// Check if the current URL is different from the previous URL
if (window.location.href !== previousUrl) {
// Set the script activation flag
scriptActivated = true;
// Stop the back navigation
event.preventDefault();
event.stopPropagation();
// Replace the current URL with the previous URL
window.history.replaceState(null, null, previousUrl);
// Reload the previous URL
window.location.href = previousUrl;
// Log the action
logAction('Back button navigation detected. Previous URL loaded.');
}
}
// Function to continuously check for URL changes
function checkUrlChange() {
if (window.location.href !== currentUrl && !scriptActivated) {
// Check if the current website is trusted
if (isTrustedWebsite(window.location.href)) {
// Allow the redirect on trusted websites
previousUrl = currentUrl;
currentUrl = window.location.href;
return;
}
// Set the script activation flag
scriptActivated = true;
// Push the previous URL into the browser history
window.history.pushState(null, null, previousUrl);
// Replace the current URL with the previous URL
window.history.replaceState(null, null, previousUrl);
// Log the action
logAction('Nefarious redirection stopped. Previous URL loaded.');
}
// Reset the script activation flag
scriptActivated = false;
// Schedule the next check
setTimeout(checkUrlChange, 100);
}
// Listen for the beforeunload event (forward direction)
window.addEventListener('beforeunload', handleRedirect);
// Listen for the popstate event (backward direction)
window.addEventListener('popstate', handleBackNavigation);
// Listen for the click event on links
document.addEventListener('click', handleForwardNavigation);
// Start checking for URL changes
checkUrlChange();
})();