Rug Pull Scams: Mechanisms and Risk Signals
A rug pull scam is a type of cryptocurrency exit scam in which a project team deliberately removes liquidity, sells tokens in bulk, or uses malicious contract restrictions to prevent selling, making it difficult for holders to exit. This guide introduces common methods, warning signs, and basic verification practices.
How Rug Pull Scams Occur
Project teams typically create a token first and provide initial liquidity in a liquidity pool on a decentralized exchange, then use social media and community promotion to attract buyers. Once the price and amount of funds increase, the team may sell reserved tokens in bulk, withdraw assets from the liquidity pool, or transfer funds through contract backdoors, preventing other holders from selling normally.
Common Types and Warning Signs
Hard rug pulls rely on malicious contract code, such as restricting sales, allowing unlimited minting, or enabling developers to withdraw funds; soft rug pulls more often involve the team rapidly selling a large amount of its holdings. Anonymous teams whose identities and backgrounds cannot be verified, unlocked liquidity, highly concentrated holdings in a small number of wallets, unsupported high-yield promises, and aggressive hype are all signals that require further verification.
Verification Methods for Beginners
Before participating in a project, verify the team's identity and track record, check whether the smart contract has been audited by a trusted third party, and confirm the liquidity lock period and terms. You should also use a blockchain explorer to examine the distribution of token holdings and understand the total supply, initial allocation, and vesting arrangements. Even after completing these checks, risk cannot be eliminated entirely, so caution remains necessary.
Original Tutorial
https://www.binance.com/zh-CN/academy/glossary/rug-pull
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