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Web3 Security Insights

Deep dives into smart contract vulnerabilities, DeFi exploit analysis, and security best practices — written by the team that built a 1,200+ exploit pattern database.

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🔒Smart Contract Security

Access Control Vulnerabilities in Smart Contracts: The Silent Permission Crisis

How broken access control has led to billions in DeFi losses. Learn the common patterns, real exploits, and how to implement robust permission systems in Solidity and Rust.

Kennedy OwiroFeb 1510 min read
🔮DeFi Security

Oracle Manipulation: How Price Feed Exploits Drain DeFi Protocols

Understanding price oracle attacks in DeFi — from spot price manipulation to TWAP exploits and flash loan oracle attacks. Real exploits, prevention patterns, and detection strategies.

Kennedy OwiroFeb 1211 min read
DeFi Security

Flash Loan Attacks: The Billion-Dollar DeFi Threat No One Saw Coming

How flash loans became the most powerful weapon in DeFi exploitation. Understand the mechanics, real attacks, and how to build flash-loan-resistant smart contracts.

Kennedy OwiroFeb 910 min read
✍️Smart Contract Security

Signature Replay Attacks in Ethereum and Solana: When Cryptography Fails

How signature replay attacks bypass authentication in smart contracts. Learn about nonce management, EIP-712, domain separation, and cross-chain replay protection.

Kennedy OwiroFeb 69 min read
🌉Smart Contract Security

Bridge Exploits: Why Cross-Chain Bridges Keep Getting Hacked

Cross-chain bridges are DeFi's weakest link — responsible for over $2B in losses. Understand the architecture, attack vectors, and how to build more secure bridges.

Kennedy OwiroFeb 311 min read
🏛️DeFi Security

Governance Attacks: When DAOs Get Hijacked by Flash Loans and Voter Apathy

How governance mechanisms in DeFi protocols get exploited through flash loan voting, vote buying, and proposal manipulation. Learn to build governance that can't be gamed.

Kennedy OwiroJan 319 min read
🏃DeFi Security

MEV and Frontrunning: The Invisible Tax on Every DeFi Transaction

How Maximal Extractable Value (MEV) costs DeFi users billions through frontrunning, sandwich attacks, and transaction reordering. Understand the mempool and protect your users.

Kennedy OwiroJan 2810 min read
🔢Smart Contract Security

Integer Overflow and Underflow: The Silent Killers in Smart Contract Math

How arithmetic errors in smart contracts lead to infinite token minting, balance manipulation, and fund theft. From batchOverflow to modern SafeMath alternatives.

Kennedy OwiroJan 258 min read

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