Security research, vulnerability deep-dives, and smart contract audit guides.
Essential security patterns for Solidity developers in 2026 — access control, reentrancy, input validation, external calls, upgradeable contracts, oracle safety, events, and testing. Practical code examples and safe vs unsafe comparisons.
A practical guide to interpreting smart contract audit reports — what severity levels mean, how to prioritize findings, what auditors often miss, and how to verify fixes.
Flash loans enable zero-capital attacks that would require millions of dollars of starting capital otherwise. Six attack patterns — price manipulation, collateral inflation, governance hijacking, arbitrage exploitation, and oracle attacks — with protocol-level mitigations.
Six critical Chainlink oracle vulnerabilities — from stale prices and sequencer downtime to decimal mismatches and missing fallbacks — with vulnerable code, fixes, and detection tips.
An in-depth analysis of six critical security vulnerabilities in ERC-4337 account abstraction: signature replay, paymaster griefing, nonce bypass, TOCTOU allowlist flaws, entryPoint trust assumptions, and initCode front-running.
Cross-chain bridges have lost over $2.5 billion to exploits. This post dissects six vulnerability classes — validator set manipulation, message replay, fraudulent proofs, unlimited minting, access control failures — with Solidity patterns and mitigations.
Upgrading Solidity contracts without understanding storage layout rules leads to silent state corruption. This post covers six real vulnerability classes — variable insertion in base contracts, missing storage gaps, type widening, variable removal, struct field addition, and mapping slot collisions — with vulnerable code, explanations, and correct fixes.
Six critical vulnerabilities that arise when deleting Solidity mappings and structs with nested mappings, leaving ghost state that attackers can exploit for double claims, privilege escalation, and cross-upgrade data leakage.
Six vulnerabilities that drain staking contracts — flash loan reward capture, integer rounding dust, missing updateReward guards, ERC-777 reentrancy, share inflation on first deposit, and admin drain via notifyRewardAmount. With vulnerable code, secure fixes, and what ContractScan detects automatically.
Pause mechanisms are meant to be emergency circuit breakers, but misconfigured pausable contracts become attack surfaces themselves. This guide covers six critical vulnerabilities — from single-key pause authority to griefing via rapid cycling — with vulnerable and secure Solidity code examples.
Protocols that accept both ETH and WETH create dual code paths with subtle security differences. Six vulnerability classes — ETH/WETH accounting mismatch, unwrap reentrancy, msg.value in loops, WETH balance checks, and more — with safe integration patterns.
Using tx.origin for authentication is one of Solidity's most dangerous anti-patterns. Attackers can create malicious contracts that trick wallet owners into authorizing actions they didn't intend. Six vulnerability patterns with msg.sender-based safe alternatives.