Standard `puppeteer-extra-plugin-stealth` is detected by modern bot detectors because `navigator.languages`, `WebGLRenderingContext`, and `chrome.runtime` have subtle mock artifacts. ### Our Hardened Stealth Script: ```javascript await page.evaluateOnNewDocument(() => { Object.defineProperty(navigator, 'webdriver', { get: () => undefined }); window.chrome = { runtime: {} }; const originalQuery = window.navigator.permissions.query; window.navigator.permissions.query = (parameters) => ( parameters.name === 'notifications' ? Promise.resolve({ state: Notification.permission }) : originalQuery(parameters) ); }); ``` Tested on Pixelscan, CreepJS, and Browserleaks: Clean, green 100/100 score.