Smart contract audit reports detail vulnerabilities found during code reviews, ensuring blockchain security. Common issues include reentrancy attacks, integer overflows, and access control flaws. Historical data shows billions lost to exploits, like the 2016 DAO hack ($50M). Audits combine manual and automated testing, identifying critical, major, and minor errors. Reports offer remediation steps, boosting user trust. Since 2017, firms like Hacken and OpenZeppelin have audited thousands of contracts, uncovering high-risk vulnerabilities. The 2024 Web3 Security Report notes access control exploits caused 80% of hacks. Regular audits and bug bounties reduce risks, but immutable blockchain code demands thorough pre-deployment checks. Comprehensive reports, often public, enhance transparency, detailing fixes and unresolved issues to safeguard decentralized applications (dApps).