Understanding Reentrancy Attacks
Learn how reentrancy attacks work, why they are dangerous, and how to protect your smart contracts from this critical vulnerability.
Master smart contract security with comprehensive guides, real-world case studies, and expert best practices.
Choose a category to start your learning journey
Learn about common smart contract vulnerabilities, how they work, and how to prevent them.
Analyze real-world hacks and exploits with detailed breakdowns of what went wrong.
Secure coding patterns, audit preparation, and proven security strategies.
Comprehensive dictionary of Web3 security terms and concepts.
Pre-deployment checklist to ensure your smart contracts are audit-ready.
Recommended security tools, frameworks, and external resources.
Hand-picked articles to get you started
Learn how reentrancy attacks work, why they are dangerous, and how to protect your smart contracts from this critical vulnerability.
Deep dive into flash loan attacks, understanding how attackers exploit uncollateralized loans to manipulate protocols.
Essential patterns for implementing secure access control in your smart contracts using OpenZeppelin and custom solutions.
Understanding what went wrong in major protocol exploits
Ethereum
The $197M Flash Loan Exploit
Analysis of how a vulnerability in the donation function combined with flash loans led to one of the largest DeFi hacks.
Ethereum
Vyper Compiler Vulnerability
How a bug in the Vyper compiler reentrancy lock led to multiple pool exploits across Curve Finance.
Learning is great, but professional audits provide an extra layer of security. Let Hexific's experts review your smart contracts.