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What is a rug pull?
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A rug pull is a scam where a cryptocurrency or NFT developer hypes a project to attract investor money, only to suddenly shut down or disappear, taking investor assets with them. The name comes from the idiom “to pull the rug out” from under someone, leaving the victim off-balance and scrambling.

Rug pulls have increased as decentralized finance (DeFi) attracts more investors to the crypto space. In the first six weeks of 2023, there were at least 11 rug pulls, resulting in the theft of a combined total of more than $14 million, according to Comparitech’s crypto scam database.

We’ll cover the types of rug pulls, real-life examples and how to avoid falling for one yourself.

Types of rug pulls

Rug pulls can be considered either hard or soft. A hard rug pull is when a developer has no intention of ever completing a project and intends to scam investors from the start, such as “hardwiring” a project’s code to leave an avenue open for theft. In contrast, a soft rug pull typically doesn’t have code-level fraud. Instead, soft pulls tend to rely on marketing hype to falsely inflate a project’s value, and then the project’s founders shut it down and run away with the money. Regardless, the result of either type is investor losses.

Rug pulls generally fall into the following categories:

Dumping

This type of soft rug pull is similar to penny stock pump-and-dump schemes. The developers of a project hype it up to draw investors and encourage trading activity, using marketing tools such as social media, sweepstakes and other incentives as well as private servers such as Discord to make a community around the project. After inflating a coin or NFT’s value, the developers rapidly sell off their own supply, tanking the token’s value. Investors are then stuck with mostly worthless assets. Dumping schemes can span hours or years depending on the developers, and can sometimes look like normal market volatility rather than deliberate scams.

Liquidity stealing

Projects hosted on a DeFi trading platform typically require a pool of crypto tokens for trades and loans. These tokens are ostensibly secured with smart contracts, but developers can build loopholes into the contracts allowing them to steal the pool of tokens from their investors. This is considered a hard rug pull, as the developers created the project with malicious intent baked in.

Limiting sell orders

Another example of a hard rug pull, this scheme relies on a project’s developer including restrictions on selling in their tokens’ code. While investors can keep buying, they can’t sell unless a developer allows it. Scammers then dump their tokens when they want, leaving investors in the lurch and stuck with eventually worthless assets.