October Security Roundup: 177 vulnerabilities found across Ethereum, Solana, Arbitrum, Base, Monad, and other major chains. • 43 of them were critical or high severity. • 10 critical, 33 high severity, 45 medium severity. With 43 high-to-critical vulnerabilities in a single month, the cost of skipping security review far exceeds the audit fee. One exploit can end a project overnight. Each chain has unique security considerations. What's safe on Ethereum might be vulnerable on Solana. Teams building cross-chain need chain-specific expertise, not generic smart contract knowledge. If you're building in Web3, security audits should be in your budget before marketing is. Security isn't overhead. It's the product.