What Is DeFi? Decentralized Finance Explained and Its Risks
DeFi is financial services on a blockchain that work without a bank or exchange: swaps, loans, deposits. Here's how it works and why it's especially easy for beginners to lose money here.
What it is
DeFi (decentralized finance) means apps on a blockchain where a program, a smart contract, takes the place of a bank or exchange. You connect your wallet and interact with it directly.
| Service | What it does |
|---|---|
| DEX (decentralized exchange) | Swaps coins without registration |
| Lending protocols | Loans backed by crypto collateral |
| Liquidity pools | You provide coins for swaps and get a share of the fees |
Risks
- Smart contract bugs and hacks. Money is regularly drained from DeFi protocols.
- Scam projects. The team can simply take the money; see rug pull.
- Phishing. One signature on a fake website, and your wallet is empty.
How to reduce the risk
- Start with large, long-established protocols.
- Keep a separate wallet with a small amount.
- Don't trust promises of high returns: the higher they are, the higher the risk.
- Check exactly what you're signing.
How to recognize suspicious schemes is covered in the lesson how to avoid scams and in the article signs of a Ponzi scheme.
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- DeFi is finance built on smart contracts without intermediaries.
- Hacks, scammers, and mistakes are the main risks.
- High yields signal high risk, so start with small amounts.
Frequently Asked Questions
Do I need to register to use DeFi?
No, all you need is a crypto wallet. That's also why there's no support or protection like on an exchange.
What is a liquidity pool?
It's a reserve of two coins in a smart contract that other users swap between. Liquidity providers get a share of the fees but risk losses if the exchange rate changes sharply.
Is DeFi safer than an exchange?
No, the risks are just different. On an exchange, the risk is the exchange itself; in DeFi, it's the contract code and your own mistakes.
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