Passport XYZ Knowledge Base
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  • What is Passport XYZ?
  • What's new
    • Stamp Re-weight: December 2024
  • Partner campaigns
    • Shape Stack -- Proof of Humanity
  • Need support?
  • FAQs
    • Holonym Verification Bug
    • What is a Sybil?
    • What is Unique Humanity?
    • How can I increase my Passport score?
    • How is my score calculated?
    • What is a Stamp vs Credential?
    • Why have my Stamps expired?
    • How can I access my Passport JSON?
    • My Stamp is verified. Why aren't the scores being added to my Passport?
    • I have a Binance Account Bound Token (BABT) from Binance. Why can’t I claim the Stamp?
    • I have a Coinbase account but Passport does not recognise it.
    • My wallet was hacked (or compromised). Can I move my scores to a new Passport?
    • Why should we put our Passport Onchain?
    • Why am I receiving zero points for a verified Stamp?
    • Why is my score on the Passport app different then my score on a partner site?
    • Can I integrate Passport into my project?
  • Using Passport
    • Creating a Passport
    • Scoring 20, for humans
    • Using Passport with Partners
    • Onchain Passport
    • Custom Passport dashboards and scores
    • Passport API and Smart Contracts
  • STAMPS
    • What are Stamps?
    • Passport's Stamp weights
    • What are Model-Based Stamps: Ethereum and NFT
    • Understanding Your Eligibility for the Gitcoin Grants Stamp on Passport XYZ
    • How to verify Stamps on Passport?
      • 🔌The Binance Stamp
      • 🔌The BrightID Stamp
      • 🔌The Civic Stamp
      • 🔌The Coinbase Stamp
      • 🔌The Discord Stamp
      • 🔌The ENS Stamp
      • 🔌The Ethereum Stamp
      • 🔌The Gitcoin Stamp
      • 🔌The GitHub Stamp
      • 🔌The Gnosis Safe Stamp
      • 🔌The Google Stamp
      • 🔌The Guild Stamp
      • 🔌The Holonym Stamp
      • 🔌The Idena Stamp
      • 🔌The Identity Staking (GTC) Stamp
      • 🔌The Lens Stamp
      • 🔌The LinkedIn Stamp
      • 🔌The NFT Stamp
      • 🔌The Phone Verification Stamp
      • 🔌The Snapshot Stamp
      • 🔌The Outdid Stamp
      • 🔌The Trusta Stamp
      • 🔌The zkSync Stamp
  • GTC STAKING
    • GTC Staking on your Identity
    • How to get GTC on your preferred network
    • Guide to Unstaking Staked GTC Tokens via Etherscan with WalletConnect
    • Initiating GTC Staking with your network
    • Passport Slashing: What You Need to Know
    • GTC Staking FAQ
  • Model-Based Detection
    • Guide to Model-Based Detection
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On this page
  • How does a Sybil attack work?
  • Why is Sybil resistance important for Passport XYZ?
  • How does Passport XYZ prevent Sybil attacks?
  • What are the consequences of Sybil attacks in Web3 projects?
  • How can users protect themselves from Sybil attacks?
  • Why is Sybil resistance challenging?

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  1. FAQs

What is a Sybil?

A Sybil is a fake or fraudulent identity created by a malicious actor to manipulate a network or system. In blockchain and decentralized networks, Sybil attacks can undermine the integrity of voting systems, consensus mechanisms, and reputation-based systems.

How does a Sybil attack work?

In a Sybil attack, an attacker generates numerous fake accounts to gain disproportionate control or influence within a system. These fake identities can be used to:

  • Manipulate voting outcomes.

  • Distort reputation scores.

  • Drain resources from reward systems.

Why is Sybil resistance important for Passport XYZ?

Passport XYZ is designed to verify the legitimacy of users, ensuring they are unique individuals. This helps to maintain trust within the ecosystem, particularly in mechanisms like funding distribution or voting, where fair participation is crucial. Without Sybil resistance, attackers could create multiple accounts to exploit the system for financial gain or influence.

How does Passport XYZ prevent Sybil attacks?

Passport XYZ uses a multi-layered approach to prevent Sybil attacks, including:

  • Aggregate, Stamp-based verification using biometrics, KYC, trust networks, and activities on web3 and web2.

  • Supervised Machine Learning Models evaluating transaction history and comparing them against proprietary lists of verified Sybils and humans.

What are the consequences of Sybil attacks in Web3 projects?

In Web3 and decentralized applications, Sybil attacks can severely distort the fairness of systems, including:

  • Misallocating funds in grant programs.

  • Distorting governance and voting systems.

  • Undermining trust and reputation-based protocols.

How can users protect themselves from Sybil attacks?

Users can protect themselves by engaging with systems that prioritize identity verification and reputation. Using tools like Passport XYZ ensures you're interacting with a network that actively mitigates the risk of Sybil attacks.

Why is Sybil resistance challenging?

Ensuring Sybil resistance can be challenging because attackers continually innovate ways to bypass verification. Balancing privacy, ease of use, and robust identity verification is a complex challenge, which is why Passport XYZ employs multiple verification strategies and actively evolves over time to stay ahead of threats.

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Last updated 4 months ago

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