You said:

Rug pull

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A rug pull is a type of scam common in crypto and DeFi projects where developers suddenly withdraw funds or abandon a project after investors have put money into it — leaving investors with worthless tokens.
How a Rug Pull Works

1. Developers create a new cryptocurrency/token.
2. They promote it heavily (often via social media, influencers, hype).
3. Investors buy in, driving up the price