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
Common smart contract vulnerabilities and prevention techniques.
Real-world hack breakdowns and post-mortems.
Secure coding patterns and audit preparation.
Web3 security terms and concepts.
Pre-deployment security checklist.
Security tools, frameworks, and 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.
Get your smart contracts professionally audited by Hexific's experts.