DeFi Smart Contract Vulnerabilities Audit Guide

Here's a thinking process:

1. Analyze User Request:

   • Topic: DeFi smart contract vulnerabilities
   • Quantity: 3 common ones
   • Requirements: List them, explain how to detect each, be specific

2. Identify Key Vulnerabilities in DeFi Smart Contracts:
   I need to pick 3 of the most common, impactful, and well-documented vulnerabilities. Good candidates:

   • Reentrancy attacks
   • Integer overflow/underflow (though less common now with Solidity ^0.8.0, still relevant in older code or via libraries)
   • Access control issues (owner-only functions, role-based access)
   • Front-running / MEV related issues
   • Flash loan attacks (often exploiting other vulnerabilities)
   • Oracle manipulation
   • Arithmetic errors (underflow/overflow)
   • Logic errors in tokenomics

Let's stick to the most