OWASP Smart Contract Top 10 Vulnerabilities – the 2026 update feels much more realistic now… Let me break it down briefly: 1. Access control vulnerabilities (permissions, not just human permissions but also inter-contract operations, cross-chain messaging, etc. – painful stuff) 2. Business logic vulnerabilities (added the word 'business,' which is the key challenge in audits) 3. Price oracle manipulation (ouch) 4. Flash loan-assisted attacks (added the word 'assisted') 5. Lack of input validation (e.g., dangerous calldata) 6. Unchecked external calls (e.g., risky delegatecall/call) 7. Arithmetic errors (new addition – caused massive losses last year with Balancer v2/Yearn yETH/Truebit, etc.) 8. Reentrancy attacks (dropped from 2023’s Top 1 to 2025’s Top 5, now at Top 8 – largely because defense mechanisms are much more mature now) 9. Integer overflow and underflow (overflow issues still haven’t disappeared…) 10. Proxy and upgradeability vulnerabilities (new addition – this is actually quite common, like last year’s wave of attacks: attackers exploited uninitialized ERC1967Proxy contracts, set malicious implementation contracts before the deployer could, then waited for the right moment to strike. Took down quite a few projects.) A slightly more complex attack is really just a combo move leveraging multiple vulnerabilities. With AI advancing rapidly, it’s a challenge for both attackers and defenders. As security infrastructure matures, I predict 8/9/10 will decline in the future, making room for new types of vulnerabilities to emerge… @SlowMist_Team