Ejiaku on Farcaster

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Sybils are cooked on union build 🚨 I noticed some new commits on Union GitHub a few hours ago, so I delved deeper to see what it was about, and this is what I found 🤯😱 The code authenticates User Id on the Union dashboard using several functions Let’s talk about the authentication functions👇 ✅hasProviderLinked(user, provider) Checks if the given user has a specific OAuth provider (like Google, GitHub) linked. ✅getProviderId(user, provider) Returns a boolean indicating whether the user is connected to the specified auth provider. 🔍 Device Fingerprinting Function This function creates a unique device fingerprint hash based on the client’s device/browser environment. It gathers: ✅Basic Info • userAgent, language, platform • cookieEnabled, screen resolution, color depth • timezone, CPU cores, memory, touch support ✅Canvas Fingerprint • A subtle but unique fingerprint since rendering differs across devices.

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✅WebGL Fingerprint • Extracts the GPU renderer name from the WEBGL_debug_renderer_info extension. ✅Audio Fingerprint • Uses AudioContext sample rate, latency, and state. ✅Font Fingerprint • Tests if standard fonts (Arial, Times, Courier, etc.) are supported. Finally, it joins all collected components into a string and returns an effect that resolves to a device fingerprint string. TL;DR: The code is used for device recognition and sybil detection. TL;DR of the TL;DR: Union testers who used bots to run transactions on the dashboard will be detected with the canvas and webGL fingerprint While, users with multiple union dashboards on same device will be detected using the fingerprint string assigned to the UIDs. To be safe and avoid getting flagged as Sybil ✅Don’t create multiple accounts on Union ✅Implement a 2FA using a phone number on all your linked accounts ✅Don’t use bots/script to push transfers on Union

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Seven’s_a_girl

This is impressive, thank you for this!

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Thanks for sharing this

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zatweirdaj.base.eth🖤🤍🖤

I can't do it on my phone🥲😭

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Topboy (Shege arc)

This is informative

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Union transaction is annoying

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