Crypto 101
Blockchain Basics

What Is DeFi? A Beginner's Guide

A beginner-friendly guide to DeFi, common activities, wallet connections, changing returns and the main risks.

Author

Can Kuskucu

Published on

June 19, 2026

What Is DeFi A Beginner's Guide

What Is DeFi?

DeFi means decentralized finance. It describes financial applications that run through blockchain transactions and smart contracts.

Instead of asking a bank to process every action, you connect a wallet and interact with a protocol. However, DeFi is not completely free of companies or trusted parties. A protocol may still depend on developers, administrators, price-data providers, stablecoin issuers and website operators.

What Can You Do in DeFi?

  • Swap: Exchange one token for another.
  • Lend: Supply assets to earn variable interest.
  • Borrow: Use crypto as collateral, with liquidation risk.
  • Provide liquidity: Add assets to a pool and earn fees, while accepting price-related risks.
  • Use derivatives: Trade perpetuals or other products that may include leverage.

Returns are not guaranteed. Interest rates and token rewards can change quickly, and the value of deposited assets can fall.

How Is DeFi Different From a Bank?

Many DeFi protocols are available at any time and allow users to control their own wallet. But access can still be limited by the website, country, token issuer or local law. Some protocols also have administrators who can pause or upgrade parts of the system.

Main Risks

  • A smart contract can contain a bug.
  • A price feed can fail or be manipulated.
  • Collateral can be liquidated when prices move.
  • A stablecoin, bridge or wrapped token can lose value.
  • A fake website can request a harmful signature or approval.
  • High advertised returns can fall or disappear.

Using DeFi with KriptoK

  1. Open the official dapp website.
  2. Connect KriptoK through WalletConnect.
  3. Check the domain and requested network.
  4. Read every signature, approval and transaction.
  5. Disconnect the session after use when appropriate.

Connecting a wallet does not move funds by itself. The risk begins when you sign a permission or transaction you do not understand. WalletConnect can warn about suspicious domains, but its protection is not perfect.

Related Reading

How to Connect KriptoK to dApps via WalletConnect

Sources