Web3 Security Fundamentals
Understanding cryptographic safety in decentralized applications and blockchains.
Published May 7, 2025
What is Web3 Security?
Web3 security focuses on cryptographic protocols, identity management, and transaction safety in decentralized systems. This includes smart contract audits, private key management, and secure off-chain data integration.
"Security in Web3 means ensuring trust through mathematics, not institutions."
Key Challenges
- Smart contract vulnerabilities
- Phishing and wallet attacks
- Off-chain data oracle risks
Security Best Practices
// Example secure smart contract pattern
pragma solidity ^0.8.0;
contract SecureExample {
modifier onlyOwner {
require(msg.sender == owner, "Not owner");
_;
}
}
Always run security audits before deploying production contracts