intermediatecritical
Understanding Reentrancy Attacks
Learn how reentrancy attacks work, why they are dangerous, and how to protect your smart contracts from this critical vulnerability.
SolidityDeFiSecurity
8 min readDec 15, 2024
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12 articles
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Common smart contract vulnerabilities and prevention techniques.
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8 articles
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Real-world hack breakdowns and post-mortems.
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10 articles
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Secure coding patterns and audit preparation.
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Featured Articles
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advancedcritical
Flash Loan Attack Vectors
Deep dive into flash loan attacks, understanding how attackers exploit uncollateralized loans to manipulate protocols.
Flash LoansDeFiManipulation
12 min readDec 10, 2024
beginnerhigh
Access Control Best Practices
Essential patterns for implementing secure access control in your smart contracts using OpenZeppelin and custom solutions.
Access ControlOpenZeppelinSecurity
6 min readDec 5, 2024
Latest Hack Analysis
Understanding what went wrong in major protocol exploits
$197M LostMar 2023
Euler Finance
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.
Donation Attack + Flash Loan
Flash LoanDonation AttackLending Protocol
$70M LostJul 2023
Curve Finance
Ethereum
Vyper Compiler Vulnerability
How a bug in the Vyper compiler reentrancy lock led to multiple pool exploits across Curve Finance.
Reentrancy (Compiler Bug)
ReentrancyCompiler BugVyper
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