A rug pull is a type of crypto fraud where the developers of a project — typically a DeFi protocol, NFT collection, or token launch — abandon the project and steal investor funds after attracting sufficient liquidity or investment. The name refers to "pulling the rug out" from under investors: once capital is deployed, the perpetrators disappear.
THE THREE TYPES OF RUG PULLS
Hard Rug (Liquidity Pull): The most common DeFi rug. Developers create a token, build a liquidity pool (usually paired with ETH or BNB), attract investors who buy the token, then drain the entire liquidity pool using a backdoor ownership function or simply by removing their own LP tokens. Investors are left with tokens they cannot sell. Detection: Check if LP tokens are locked (using Team Finance, Unicrypt). Locked LP = developer cannot remove liquidity. Soft Rug (Slow Rug / Developer Dump): Developers gradually sell their token allocation over time rather than one immediate exit. The price slowly declines as insider supply is sold into community buyers. Eventually abandoned. Detection: Monitor wallet tracking of known dev wallets. Large dev allocation with short vesting = slow rug risk. Exit Scam: Project raises funds (IDO, private sale, presale), then disappears before delivering any product. No smart contract exploitation — simply fraud.
FAMOUS RUG PULLS
Squid Game token (SQUID, 2021): Gained viral attention based on Netflix show. Developers extracted $3.4M in a single minute by exploiting an anti-sell mechanism — buyers could not sell. OneCoin (2016-2019): The largest crypto fraud — $4.4B raised through MLM, no actual blockchain. Thodex (Turkey, 2021): Centralised exchange CEO fled with $2B in customer funds. Luna Yield (Solana, 2021): $6.7M drained on day of launch.
RUG PULL DETECTION CHECKLIST
Is LP locked for at least 6-12 months? (TokenSniffer, Team Finance). Is the contract ownership renounced? Can the contract mint unlimited new tokens? Check max supply function. Is there a blacklist function (can block specific wallets from trading)? Is the team anonymous with no verifiable identity? What is the token distribution — do top 10 wallets hold >50%? Use RugDoc, Token Sniffer, De.Fi Shield for automated risk scoring.
A blockchain is a subset of a distributed database. The Bitcoin inventors originally prototyped the system in 2008. This modern database is made up of separate blocks that are connected together in a chronological chain. Blockchains may be used to store a wide range of data types. It has mostly been utilized as a public ledger for bitcoin transactions to date. A peer-to-peer network comprised of independent nodes uses a consensus process to ensure the blockchain's security and legitimacy. Each node in the network keeps a public and immutable copy of the data.
2 Factor Authentication is a security measure with two layers. It is used by the majority of cryptocurrency exchanges. To log in, you must provide not only a password, but also a code obtained, for example, from the Google authenticator.
An airdrop is a method of distributing coins. End users can typically obtain coins for free or in exchange for doing a small task, such as subscribing to a newsletter, sending a tweet, or inviting others via a personal affiliate link. Cryptocurrency airdrops — the act of depositing cryptocurrency into public crypto wallets — are utilized as a marketing, liquidity creation, and network bootstrapping technique for many different types of blockchain initiatives.
Altcoin - "alternative coin" - is any kind of digital currency other than Bitcoin. Since the launch of Bitcoin, the world's first digital currency, many altcoins (as well as supporting blockchains) have been created. Altcoin digital currencies share many similarities to Bitcoin, but consistently and have significant differences. There are about 20,000 altcoins, and this number is expected to grow significantly in the coming years. Altcoins often develop Bitcoin features. Ethereum, currently the most widely used blockchain, supports digital contracts and separate applications where Bitcoin does not. Altcoins are also often created to cater to the needs of different users. The Litecoin blockchain, for example, can process payments quarterly for the duration of Bitcoin.
Cold storage is the way to store cryptocurrency offline. The word refers to the use of offline wallets that are not connected to the internet. Cold storage is the most secure way to keep cryptocurrencies since an offline currency becomes less likely to be hacked and stolen. Paper wallets, printed renditions of private keys, and offline hardware and software wallets are all examples of cold storage.
