DeFi Smart Contract Vulnerabilities Audit Guide

Here's a thinking process:

1. Understand User Request:

   • User wants 3 DeFi smart contract vulnerabilities
   • For an audit report
   • Must be specific
   • I need to provide exactly that: 3 specific vulnerabilities suitable for a DeFi audit report

2. Identify Key DeFi Vulnerability Categories:

   • Reentrancy
   • Access control / Privilege escalation
   • Arithmetic issues (overflow/underflow, though less common now with Solidity 0.8+)
   • Oracle manipulation
   • Front-running / MEV related
   • Logic errors in protocol operations (liquidations, swaps, etc.)
   • State consistency issues
   • ERC20/ERC777/ERC1155 token interaction bugs
   • Misuse of transfer vs call / send vs call
   • Missing