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Learn Smart Contract Security from Real DeFi Hacks | Complete Web3 Security Guide (Part 1)

Name: Learn Smart Contract Security from Real DeFi Hacks | Complete Web3 Security Guide (Part 1)
Uploaded: 2026-07-21T17:00:19+00:00
Duration: 30 min 7 s

CodeByAnkita

Welcome to CodeByAnkita!

In this video, we begin our complete Web3 Security Guide by exploring how real smart contract exploits happen and why security is one of the most valuable skills for blockchain developers.

Smart contracts secure billions of dollars across DeFi protocols, NFT marketplaces, DAOs, lending platforms, decentralized exchanges, and cross-chain bridges. Unlike traditional software, smart contracts are immutable after deployment, meaning a single vulnerability can lead to irreversible financial losses.

In this video, you'll learn why Web3 security is different from Web2 security, understand the most common categories of smart contract attacks, and discover the best platforms where professional auditors study real DeFi exploits.

Whether you're a Solidity developer, blockchain engineer, security researcher, or someone preparing for smart contract auditing, this video will help you build the right security mindset.

What you'll learn in this video:

• Why Web3 security is important

• Web2 vs Web3 Security

• Why Smart Contract Audits Matter

• Smart Contract Attack Surface

• Reentrancy Attacks

• Flash Loan Attacks

• Oracle Price Manipulation

• Governance Attacks

• Cross-Chain Bridge Exploits

• Economic Attacks in DeFi

• Real-world Smart Contract Exploits

• How Professional Auditors Study Hacks

• Best Websites to Learn Smart Contract Security

Platforms Covered:

• Rekt News

• DeFiLlama Hacks

• Solodit

• Immunefi

• BlockThreat

• Web3 Is Going Great

This video is perfect for:

• Solidity Developers

• Blockchain Developers

• Ethereum Developers

• Smart Contract Engineers

• Web3 Developers

• Security Researchers

• DeFi Developers

• Beginners Learning Smart Contracts

• Smart Contract Auditors

Resources:

💻 GitHub Repository

https://github.com/codebyankita

📝 Medium

https://medium.com/@ankitacode11

💼 LinkedIn

https://www.linkedin.com/in/ankita-virani-4bb478282/

Next Video (Part 2)

In Part 2, we'll explore:

• CodeHawks

• Code4rena

• Hats Finance

• Sherlock

• Ethernaut

• Damn Vulnerable DeFi

• Capture The Ether

• Paradigm CTF

• Secureum

• Foundry

• Slither

• Echidna

• Tenderly

• Certora

• Complete Smart Contract Audit Workflow

• Career Roadmap for Smart Contract Auditors

If you found this video helpful, don't forget to Like, Share, and Subscribe for more blockchain, Solidity, Ethereum, and Web3 development tutorials.

Thanks for watching!

#Web3 #Blockchain #Solidity #Ethereum #SmartContracts #SmartContractSecurity #BlockchainSecurity #DeFi #Crypto #Web3Security #Auditing #CodeByAnkita