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Manifest V3 Chrome extension that patches browser fingerprint vectors at document_start for WAF bypass
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Based on SOC occupation classification
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| name | stealth-extension |
| description | Manifest V3 Chrome extension that patches browser fingerprint vectors at document_start for WAF bypass |
| version | 1.0.0 |
| author | Dustin Chadwick (@ShaggyD) |
| license | MIT |
| tags | ["chrome","extension","stealth","fingerprint","waf-bypass","manifest-v3"] |
A Chrome extension that makes headless Chrome look like a real browser. Patches fingerprint signals at document_start, before any page scripts can detect them.
Most stealth approaches run too late. By the time your content script or flag kicks in, the page has already sampled navigator.webdriver, checked plugin count, probed the languages array, and queried the Permissions API. Once those signals are read, you've already lost.
A Manifest V3 extension with a single content script (stealth.js) that executes at document_start, before any page script or inline JS runs. It patches:
undefined (removes the automation flag)['en-US', 'en']By the time the page loads, your browser fingerprint is indistinguishable from a real Chrome installation. WAFs like Cloudflare, LinkedIn, and Indeed see a normal user session and let traffic through.
chrome://extensionsextensions/stealth-extension/ directoryNo config needed. The extension runs automatically on all pages.
agent-browser --args "--disable-blink-features=AutomationControlled,--load-extension=/path/to/stealth-extension" open https://example.com
| File | Purpose |
|---|---|
manifest.json | Extension manifest (Manifest V3, host permissions) |
stealth.js | Patches browser fingerprint vectors at document_start |